Tetsuji Arafune/Relationships

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

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. The two are currently friends. Arafune calls Murakami by his first name without honorifics, while the no. 4 Attacker uses Arafune's surname, he too without honorifics, the reason being that he thinks it sounds cool (implying that it is not because they are not close enough for him to do so).

Taichi Betsuyaku
Betsuyaku originally assumed that Arafune had quit being an Attacker due to being dwarfed by Murakami's talent, 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.

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. 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. Kuruma refers to Arafune by his surname followed by the honorific -kun.

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. Kageura refers to him by his surname, without honorifics. Arafune is a regular customer of Kageura's family okonomiyaki restaurant, although he does not seem to be part of Kageura's closest circle of friends.

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.

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.

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

Reiji Kizaki
Arafune appears to respect Kizaki, 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, but he switched to calling him by his first name 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.

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.