Noboru Koarai

"Slinking off to lick our wounds doesn't sit well with me. If we gotta bail out, I wanna do it in a blaze of glory... Well, that's what I'd normally say..."

- Noboru Koarai to his teammates

Noboru Koarai is a B-rank Attacker and a member of the latest generation of Azuma Unit.

Appearance
Koarai is a light-skinned boy of average build. He has slit pupils and short dark blonde hair that is slicked into an upturned point in the front. He seems to favor wearing light, dark-colored jackets, although he has also been seen donning hoodies.

In his trion body he wears a navy blue, long-sleeved jacket with black lines bordering the zipper and the high collar, which he keeps open, and running horizontally around it both on the inside and the outside. Vertical black stripes run from the collar to the wrists of the jacket, interrupted only where Border's logo is emblazoned on the outer side of each sleeve a little below the wearer's shoulders. On the right breast are two piped patch pockets closed by flaps, while on the left is the B-rank logo. Underneath the jacket is a light-colored shirt with a round neck. The uniform is completed by a dark gray boots and headphones and a pair of black pants.

Taichi Betsuyaku
Betsuyaku is school friends with Koarai, whom he refers to by the nickname "Koala", seemingly connoting a rather close relationship.

Hisato Sasamori
Koarai and Sasamori are of an age and might be close, seeing as they were seen walking together in the base. Koarai was enthusiastic about Sasamori's one victory against Hyuse.

Kō Murakami
Koarai and Murakami might be close, since the former referred to the latter by his first name.

Shinnosuke Tsuji
Koarai is presumably somewhat close with Tsuji, taunting him when they clashed in round four. For his part, Tsuji appears not to mind Koarai's informality. Nonetheless, Koarai acknowledges Tsuji's superior swordsmanship and addresses him respectfully, using his surname and the honorific senpai.

Sumiharu Inukai
Inukai knows Koarai well enough to be able to tell that he would generally prefer to hope in a final shot rather than retreat, as well as to call him by his nickname.

Yūta Miura
Koarai and Miura know each other at least by sight, although Miura's popularity among younger Attackers could imply that they are closer than that. Koarai addresses him by his surname.

Quotes

 * (Azuma's motto, taken up by Koarai and Okudera) "When you fight with strategy, take into account the enemy's strategic prowess."
 * (To Haruaki Azuma) "I really think we should tweak the map. It would be super fun."
 * (To Tsuneyuki Okudera) "I'm sure we'll get more ideas if it's more fun."
 * (To his teammates) "Slinking off to lick our wounds doesn't sit well with me. If we gotta bail out, I wanna do it in a blaze of glory... Well, that's what I'd normally say..."
 * "They think I've grown? That's nice and all. But all I could actually do in the end was run away..."

Trivia

 * "Noboru means "rise, mount, board, climb", while "Koarai" means "small wasteland pit".
 * He likes soccer and karaage (a Japanese fried snack, usually chicken or potatoes).
 * Despite Koarai and Okudera using Grasshopper in both rank battles in which they appeared, as well as it being included in their Trigger Sets in Border Briefing File, it is in fact a Trigger which they add only before certain matches.