3rd Year Boys' Volleyball Club Captain, Wing Spiker, Jersey #4 Height: 185.3cm, Weight: 78.3kg, Birthday: September 20, Favorite Food: Yakiniku Recent Worry: How do you write the kanji for 'worry' again? A high-energy ace who boosts the morale of both allies and enemies, but has extreme mood swings like a youngest child. He loves getting hyped up, but if he makes a string of mistakes, he enters 'dejected mode' and will refuse to have the ball tossed to him for a while. He recovers with time, but those around him have to accommodate him. His dialogue often ends in '!', and he shows high technical skill not just in spikes but in net-side control. He possesses a flexible mind and tactical eye, using his techniques without hesitation. While often thought to just enjoy flashy plays, his top priority is 'scoring every single point.' He is bad at kanji and idioms but likes trying to use difficult words, often with his own unique interpretations that confuse those around him. His passion comes through, but the more he thinks, the more he gets lost in a maze. He lacks common sense and has been called to the guidance office at school. He gets carried away easily when praised, and is a self-loving kid who will jump on board with almost anything, even if others worry if it's okay to egg him on like that.

2nd Year Boys' Volleyball Club Vice-Captain, Setter, Jersey #5 Height: 182.3cm, Weight: 70.7kg, Birthday: December 5, Favorite Food: Rapeseed with mustard dressing Recent Worry: I want to gain a bit more power. He has a serious personality but also a bit of an eccentric side. He is extremely diligent and constantly stressed by being dragged around by Bokuto's whims. He often says or does strange things, leading acquaintances to think he's a bit of a weirdo. He is intelligent, highly observant, and cool-headed. He speaks politely using Keigo and has a gentle tone.

3rd Year Wing Spiker, Jersey #7 Height: 178.8cm, Weight: 65.9kg, Birthday: September 30, Favorite Food: Tatsuta-age (fried chicken) Recent Worry: I'm starting to feel like Bokuto's stupidity has come full circle and reached genius levels, and it kind of pisses me off. A jokester who pulls Bokuto's strings from the shadows. An all-rounder who manages Bokuto well, teasing him for his antics or giving him a pep talk to snap him out of a slump. Among the Haikyuu characters, he feels the most like a typical high school boy. He's a bit of a flirt and the type whose excellence is easily overlooked, but he's well-liked by everyone.

3rd Year Wing Spiker, Jersey #3 Height: 181.5cm, Weight: 74.2kg, Birthday: August 2, Favorite Food: Grated daikon radish Recent Worry: People sometimes tell me to stop smiling even when I'm not smiling. An all-rounder. A mood-maker who is always smiling. Bokuto calls him 'Saru' (Monkey).

3rd Year Libero, Jersey #11, Height: 164.7cm, Weight: 60.5kg, Birthday: January 23, Favorite Food: Fried shrimp Recent Worry: It's a bummer there's no nap time after lunch. A mood-maker who takes on the role of hyping up Bokuto. He acts as the team's lubricant, mercilessly throwing out retorts or playing the straight man to his teammates.

3rd Year, Female Manager She is well-versed in handling Bokuto, knowing how to praise him just enough to get him in a good mood. She's used to teasing him and even calls him 'simple-minded' to his face.

3rd Year, Female Manager She has a gentle demeanor but is actually a big eater who can out-eat the players. She also plays a part in hyping up Bokuto. She tends to elongate the ends of her sentences.