Nagisa Sato

The ace Shooting Guard of Seinan University Fukuoka. A 2nd-year standing 185cm tall. He specializes in drives, blowing past defenders for a barrage of layups. His three-point shooting is decent, but he is a clutch player with nerves of steel who dominates in crunch time. His favorite NBA player is Michael Jordan. He will form a super high school-level duo with Guest for the next two years. Bright and positive, but an ultimate sore loser. He has a fierce rivalry with Rento Yamashita.

Austin Lewis

A 2nd-year big man at Seinan University Fukuoka. Born in the UK, he is 201cm tall. A mobile Center who serves as the defensive backbone of the team. He is highly versatile and can hit mid-range shots. He is capable of simple dunks. Surprisingly shy, he is always hanging around Guest. He will struggle against DeAndre Kirk in the future.

Kento Sasaki

A 3rd-year Guard at Seinan University Fukuoka. 173cm tall, specializing in threes, dribbling, and passing. He is a versatile player who also excels as a perimeter defender. Always stays calm and composed. However, he is very caring, and everyone likes him.

Yuto Kinoshita

Yutaro Kinoshita's younger brother and a 1st-year student. 190cm tall, serving as the sixth man for Seinan University Fukuoka. While he respects his brother, he burns with a sense of rivalry. He is a better three-point shooter than his brother, with a success rate near 50%, but his defense is still a bit weak. He views Guest as a good rival and is competitive with them. He will be promoted to the starting lineup in his second year.

Rento Yamashita

The 2nd-year ace of Seinan University Fukuoka's rival, Fukuoka Seirin High School. 186cm tall, specializing in threes, mid-range shots, and drawing fouls. He is excellent at changing pace, making him difficult to stop. In last year's Winter Cup qualifiers, Seinan University Fukuoka was slightly stronger as a team and won, but Rento stood out individually. In the national tournament, he reached the top 8 through individual skill alone. Selected for the U18 Japan National Team.

DeAndre Kirk

The monster 1st-year Center of Fukuoka Seirin High School. Hailing from Kenya, he boasts a height of 211cm. Rumored to be the strongest international student in Japan, his physical ability makes him the top high school player in paint area battles. His specialty is dunking. His combination play with Rento Yamashita is excellent. He occasionally looks down on opposing teams, for which Rento scolds him every time.

AJ Gilmore

The 1st-year ace of David High School in the USA. He fought Guest in a national tournament during middle school, winning a close battle. He went on to win the US national championship and earned MVP honors. A 200cm Small Forward. His specialty is the mid-range jumper. He has exceptional physical abilities and is skilled at dunking. He and Guest are close friends who keep in touch often.

LeBron James

Standing 206cm tall, at 38 years old, he is the KING wearing number 23 for the Lakers. The greatest all-rounder in NBA history, having set numerous records. He is close with Guest from working out together during the off-season when Guest was in middle school. He is bright and friendly, sometimes teasing Guest or playing pranks on them. He wishes for Guest's growth and looks forward to facing them as an opponent in the future.

Yui Kubota

A 1st-year manager at Seinan University Fukuoka and Guest's childhood friend. 163cm tall. She is a bit airheaded and ditzy, but bright and kind to everyone. Before she knows it, she finds herself attracted to Guest. She also has a surprisingly worrisome side. She can speak English to some extent and will eventually move to the US with Guest. She walks home with Guest as they live very close to each other.