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World Trigger Wiki
I want to find methods that work for everyone and then mass-produce Perfect All-Rounders. My long-term goals are different from 's.

Tetsuji Arafune to Tatsuya Kuruma, in Suzunari First.[1]

Tetsuji Arafune ((あら)(ふね) (てつ)() Arafune Tetsuji?) is a B-rank Sniper (formerly an Attacker) and the captain of Arafune Squad.


Arafune without his usual cap.

Arafune is a light-skinned, lean young adult with messy, medium-length brown hair. He is often seen wearing buttoned shirts and leaving the top buttons undone and a black cap with a turquoise visor.[5][6] At Border's HQ he wears casual clothes, such as a skin-tight black shirt and a light-colored sweater he keeps tied around his waist.[5] His squad's uniform consists of a jet black jacket with turquoise stripes around the raised collar, along the zipper, around the hem and the wrists, and white ones around and inside the raised collar and on the outer side of the sleeves. There are also four white lines, arranged in two columns of two, to each side of the zipper. Above the topmost left white line is the B-rank logo with the squad's position emblazoned on it. The attire is completed by jet black pants, boots, and the same cap he wears in his casual clothes to keep the sun out of his eyes.[7]


Arafune may come initially across as rude due to his habit of not mincing words and his manner of speaking occasionally being coarse, but he is considered a nice guy by other Border agents,[8] and he was seen speaking harshly only to or about his friends and people who would not get upset.[9][10][8] Although he enjoys competition and combat and can be observed smiling before[11] and during rank battles[12] he does not resent agents who best him.[13] When the stakes are real, such as during Neighbor attacks, he is serious, focused and keeps his speech neutral and to the point.[14][15][16][17][18][19] He is very self-confident and ambitious, his aspiration being not only to become the first Perfect All-Rounder since Reiji Kizaki, but also to develop theories based on his experiences to mass-produce Perfect All-Rounders.[1]


Atsushi Hokari[]

Aside from being teammates, Hokari and Arafune are close friends who hang out together.[6] Hokari also introduced Arafune to weight muscle training.[20]

Kō Murakami[]

Arafune and Murakami were originally a mentor and disciple, but when Arafune reached Master Class he switched to Sniper. Like many others, however, Murakami assumed that Arafune quit because he resented him for surpassing him in only six months. When he found out about Murakami's state of mind, Arafune sent him a video whose aim, despite the Sniper sounding as though he was rebuking Murakami for getting cocky, was to reassure him that he did not hold a grudge against him.[21] The two are currently friends.[22] Arafune calls Murakami by his first name without honorifics,[8] while the no. 4 Attacker uses Arafune's surname, he too without honorifics,[23] the reason being that he thinks it sounds cool[24] (implying that it is not because they are not close enough for him to do so).

Reiji Kizaki[]

Arafune appears to respect Kizaki,[25] probably not in small part due to his goal of becoming the second Perfect All-Rounder, Kizaki being the first. Though Arafune originally referred to Kizaki by his surname followed by the honorific -san,[1] but he switched to calling him by his first name[25] after seeking his guidance on how to achieve his goal. The two might have also become closer due to Arafune becoming interested in weight muscle training.[20]

Masato Kageura[]

Arafune and Kageura appear to be on good terms, with Arafune referring to the latter by his first name without an honorific and recognizing his superior skill as an Attacker.[8] Kageura refers to him by his surname, without honorifics.[26][27] Arafune is a regular customer of Kageura's family okonomiyaki restaurant,[28] although he does not seem to be part of Kageura's closest circle of friends.[6]

Yūma Kuga[]

Arafune enjoys a friendly rivalry with Yūma, and the two have sparred in solo matches on at least one occasion.[29] Despite claiming to want to teach him humility,[9] Arafune is impressed with the wealth of Yūma's fighting experience.[30]

Shun Midorikawa[]

Arafune's relationship with Midorikawa is similar to the one he has with Yūma, feigning outrage at his junior getting cocky and challenging him to teach him a lesson. He seems to be closer to Midorikawa, wrestling with him after hearing that he had predicted his defeat at Yūma's hands. For his part, Midorikawa does not shy away from teasing Arafune.[31]

Tatsuya Kuruma[]

When Arafune quit being an Attacker Kuruma seemed to disbelieve that it was because of Murakami, which, together with their organizing a get-together, suggests that he already knew him in some capacity.[10] However, Kuruma was unaware of the former Attacker's ambition to develop a master theory to mass-produce Perfect All-Rounders, which greatly impressed him.[1] Kuruma refers to Arafune by his surname followed by the honorific -kun.[10]

Yuzuru Ema[]

Arafune gave Ema advice on the matter of the away expedition, possibly suggesting that the two are close enough for Ema to be willing to share his dilemma and his crush with Arafune. Arafune addresses Ema by his surname without appending an honorific.[32]

Hikari Nire[]

Arafune and Nire appear to be on good terms, with her greeting him enthusiastically when they met at Kageura's restaurant and he smiling back at her. She calls him by his surname, without honorifics.[33]

Taichi Betsuyaku[]

Betsuyaku originally assumed that Arafune had quit being an Attacker due to being dwarfed by Murakami's talent,[34] but after listening to his recorded message, he learned the truth and concluded that Arafune was in reality a very kind person. Betsuyaku refers to him by his surname with the honorific -san.[8]


  • (To Tamakoma Second) "Amateurs! You gave yourselves away!"[35]
  • (To various people) "I'll cut you down to size."[9][31]
  • (To Kuruma) "I want to find methods that work for everyone and then mass-produce Perfect All-Rounders. My long-term goals are different from Kō's."[1]
  • (To Murakami) "Hey Kō, sounds to me like you're drunk on your own power. You think just because you beat me, now you're king of the world? You're 'stealing everyone's hard work'? My teaching skills are just that good! Don't be so full of yourself! That crap should be saved until after you beat Tachikawa, Kazama and Kage! All right?"[8]
  • "They don't bite, do they? I don't like dogs..."[36]
  • (To Ema) "If you're so worried about her then go protect her yourself!"[37]


  • Arafune likes okonomiyaki (a type of Japanese pancake), chilled tofu salad, action movies, and tea[38] and dislikes dogs.[39]
    • The reason behind his fear of dogs is that he was bitten by a small dog on his right butt cheek for no reason when he was young, leaving a scar that still remains even now.[40]
  • He is unable to swim,[39] to the point where he is reluctant to submerge his face.[41]
  • He goes to a prep school and is one of the few B-rank agents with good grades.[39]
  • Arafune is considering getting a motorbike license.[42]
  • He erroneously assumed that Yūma had been taught by Kizaki and Yūichi Jin,[25] when in fact his only mentor in Border was Kirie Konami.

The white stripes are filled in.

  • In the magazine release of Chapter 87, Arafune's uniform is erroneously drawn with the white stripes colored in.[43] This was later fixed in the volume release.
  • The author joked that since he often draws Arafune jumping off buildings, the Sniper chooses them precisely so that he can leap off later.[39]
  • His voice actor, Eiji Takemoto, also voices Katsumi Karasawa.


  1. 1.0 1.1 1.2 1.3 1.4 World Trigger Manga Chapter 95 (p. 4)
  2. World Trigger Manga Chapter 87 (p. 12)
  3. Daisuke Ashihara: Q75: Arafune’s name is "Tetsuji", does he have an older brother? A: He doesn’t. It’s because his father’s name is "Tetsuya".
    Source: Border Briefing File, Question 75
  4. 4.0 4.1 World Trigger Manga Chapter 89 (p. 18)
  5. 5.0 5.1 World Trigger Manga Chapter 92 (p. 17)
  6. 6.0 6.1 6.2 World Trigger Manga Chapter 163 (p. 17)
  7. Daisuke Ashihara: Q139: Is there any meaning to the hats that snipers like Arafune, Taichi, and Akane wear? A: It seems the purpose is to block out the sun from getting in the way when sniping.
    Source: Border Briefing File, Question 139
  8. 8.0 8.1 8.2 8.3 8.4 8.5 World Trigger Manga Chapter 95 (p. 5)
  9. 9.0 9.1 9.2 World Trigger Manga Chapter 89 (p. 19)
  10. 10.0 10.1 10.2 World Trigger Manga Chapter 95 (p. 3)
  11. World Trigger Manga Chapter 88 (p. 7)
  12. World Trigger Manga Chapter 90 (p. 2)
  13. World Trigger Manga Chapter 95 (p. 4-5)
  14. World Trigger Manga Chapter 54
  15. World Trigger Manga Chapter 58
  16. World Trigger Manga Chapter 59
  17. World Trigger Manga Chapter 60
  18. World Trigger Manga Chapter 129
  19. World Trigger Manga Chapter 136
  20. 20.0 20.1 Daisuke Ashihara: Q128: Arafune called Kizaki by his last name 8 months ago but now calls him by first name, did he seek teaching from him or became his disciple for his goal of becoming a perfect All-rounder? A: It seems likely. At that point, Arafune started emulating Hokari and started weight training, so there was the rumor within Border that he "received a muscle baptism".
    Source: Border Briefing File, Question 128
  21. World Trigger Manga Chapter 95 (p. 1-5)
  22. World Trigger Manga Chapter 93 (p. 1-2)
  23. World Trigger Manga Chapter 93 (p. 1)
  24. Daisuke Ashihara: Q74: Q.074: Arafune calls Kō by hus first name, so why does Kō call Arafune by his last name? A: Because Murakami thinks the last name "Arafune" sounds cool.
    Source: Border Briefing File, Question 74
  25. 25.0 25.1 25.2 World Trigger Manga Chapter 90 (p. 9)
  26. World Trigger Manga Chapter 109 (p. 4)
  27. World Trigger Manga Chapter 110 (p. 13)
  28. Daisuke Ashihara: Q129: Kageura is called by the nickname "Kage" by Kō and Arafune, but how and through what common ground did these three people with such different personalities become friends? A: Murakami and Arafune are swordsmanship mentor and disciple, Kage and Murakami are in the same class in school, Kage and Arafune are the second son of an okonomiyaki restaurant and its regular customer.
    Source: Border Briefing File, Question 129
  29. World Trigger Manga Chapter 94 (p. 11)
  30. World Trigger Manga Chapter 90 (p. 16)
  31. 31.0 31.1 World Trigger Manga Chapter 92 (p. 18)
  32. World Trigger Manga Chapter 163 (p. 17-19)
  33. World Trigger Manga Chapter 164 (p. 10)
  34. World Trigger Manga Chapter 95 (p. 1)
  35. World Trigger Manga Chapter 88 (p. 14)
  36. World Trigger Manga Chapter 124 (p. 17)
  37. World Trigger Manga Chapter 163 (p. 19)
  38. World Trigger MangaBorder Briefing File (p. 166)
  39. 39.0 39.1 39.2 39.3 Volume 8 Character Profiles
  40. Daisuke Ashihara: Q79: What is the reason behind Tetsuji Arafune disliking dogs? A: Because he was bitten by a small dog on his right butt cheek for no reason when he was young. The scar still remains even now.
    Source: Border Briefing File, Question 79
  41. Daisuke Ashihara: Q77: Arafune’s weakness had "can’t swim", but what is his limit? A: At the point of putting his face in the water, he is breaking through his limits.
    Source: Border Briefing File, Question 77
  42. Daisuke Ashihara: Q: Is there anyone of 18 and above who has a driver’s license for a car or a bike? A: Aside from Reiji who has already driven in the story, it seems Fuyushima, Azuma, Suwa, Tsutsumi, Kako, and Kakizaki have normal driver’s licenses. The top brass and Sawamura have licenses too. Tachikawa doesn’t as you might expect. Zoe has a motorbike license, and Kage and Tōma have motorized bicycle licenses. It seems Arafune and Hokari want motorbike licenses too.
    Source: Question Corner 15, Volume 20
  43. World Trigger Manga Chapter 87 (p. 14)


Trigger: Egret  •  Bagworm  •  Kogetsu
e d vBorder
Commander in Chief Masamune Kido
Administration Eizō NetsukiKatsumi KarasawaKyōko SawamuraMasafumi ShinodaMotokichi KinutaTakumi Rindō
General Staff Michael CroninRaizō TerashimaSeiji Mizunuma
S-Rank Tsukihiko Amō
A-Rank Ai KitoraAsumi AmakuraFutaba KuroeHayato UnoIsami TōmaJun ArashiyamaKazuma SatomiKei TachikawaKen SatoriKirie KonamiKōhei IzumiKyōsuke KarasumaMai KitagawaMitsuru TokiedaNozomi KakoReiji KizakiRyō UtagawaRyūji SaekiShinji FuyushimaShirō KikuchiharaShōhei KoderaShūji MiwaShun MidorikawaSōya KazamaTakaaki KatagiriTakeru YuigaTōichirō MomozonoTōru NarasakaYōsuke YoneyaYūichi JinYukimaru Ichijō
B-Rank Atsushi HokariChika AmatoriDaichi TsutsumiFumika TeruyaHanao TsukimiHaruaki AzumaHidetaka KitazoeHiro KitazoeHisato Sasamori • Hitoshi Matsushiro • HyuseItsuki FujisawaKai MinamisawaKazuaki ŌjiKazuki KurauchiKazuto TonookaKeizō MamiyaKō MurakamiKōji OkiKōtarō SuwaKotarō TomoeKuniharu KakizakiMakoto Chano • Mamoru Tokiwa • Masakuni Hakoda • Masataka NinomiyaMasato KageuraMinoru HataMitsuya KoinumaNoboru KoaraiOsamu MikumoRei NasuRokurō Wakamura • Ryōgo Funabashi • Satoru Hayakawa • Satoshi Mizukami • Seiji Marui • Shinnosuke Tsuji • Shō Motegi • Sumiharu InukaiTaichi Betsuyaku • Takahiro Ebina • Takuma YubaTatsuhito IkomaTatsuya KurumaTetsuji Arafune • Tokiya Saitō • Tsuneyuki Okudera • Waka Utsunomiya • Wataru UrushimaYōko Katori • Yoshinobu Kera • Yoshito HanzakiYūichirō YoshizatoYukari Obishima • Yukito Otokawa • Yūko KumagaiYūma KugaYūta MiuraYutaka Kashio • Yūya Tsuchisaki • Yuzuru Ema
C-Rank Fumifumi SaotomeHidehide HinoeIzuho NatsumeTeruteru Kōda
Operators Aki HiyamiAn KobayakawaAoi Kusumoto • Asami Taya • Asuka Asagiri • Ayumu Hatori • Hana SomeiHaruka AyatsujiHaya Kittaka • Hazuki Nanao • Hikari NireKaho MikamiKarin YuitsukaMadoka UiMako HitomiMaori HosoiMegumi TokuraNono FujimaruRen TsukimiRika RokutaRin KagamiRisa MakiRui OsanoSaki KusakabeSakurako TaketomiSayoko ShikiShiori UsamiYuka KonYuri RindōYuu Kunichika
Former Border Agents Akane HiuraMirai HatoharaShin KazamaSōichi MogamiTadaomi KandaYūgo Kuga
Affiliated Personel RaijinmaruReplicaRinji AmatoriRuka ShinodaYōtarō Rindō
Squads Arafune SquadArashiyama SquadAzuma SquadChano SquadEbina SquadFuyushima SquadHayakawa SquadIkoma SquadKageura SquadKakizaki SquadKako SquadKatagiri SquadKatori SquadKazama SquadKizaki SquadKuruma SquadKusakabe SquadKōda SquadMamiya SquadMatsushiro SquadMikumo SquadMiwa SquadNasu SquadNinomiya SquadŌji SquadSuwa SquadTachikawa SquadTokiwa SquadUrushima SquadYoshizato SquadYuba Squad
Branches Hayanuma Branch • Hisama Branch • Suzunari BranchTamakoma Branch • Wataayu Branch • Yumite District Branch
Factions Kido FactionShinoda FactionTamakoma Branch
Triggers AsteroidBagworm • Bagworm Tag • Bail OutChameleonCobraConnectorDummy BeaconEgret • Enhanced Radar • EscudoFūjinFull ArmsFull AttackGeistGimletGrasshopperHornetHoundIbisIdatenKogetsu (Spear/Gen'yō/Senkū) • Lead BulletLightning • Makō • MeteorRadarRaygust (Shield Mode/Thruster) • RingSalamanderScorpionShield (Fixed Mode/Full Guard) • Silencer • Sōgetsu (Axe) • SpiderStarmakerSwitchboxTeleporter • Timer • TomahawkTrion BodyViper