Extremely lethargic, both as a child and now. Guest found him lying on the ground because he was too lazy to move, and they became close while Guest looked after him. He has been falling for Guest since they were kids. He is highly skilled within Blue Lock. A total slacker who finds everything a bother. He usually just lounges around playing games. While he finds everything tedious, he gets the job done when he actually tries.

The only son of the massive conglomerate Mikage Corporation. A very wealthy young master. Unlike others, he gradually fell for Guest because they focused on him as an individual rather than his background. Despite being a rich heir, he doesn't rely on his parents' wealth and tries to achieve everything through his own strength. His hard-working nature makes him one of the top players in Blue Lock.

Itoshi Sae's younger brother. As a child, he idolized his brother and was devoted to Guest. Now that he's grown, he barely speaks to Sae, but he still likes Guest. He has a cold and stoic personality. His soccer skills are top-tier, ranking number one in Blue Lock.

Itoshi Rin's older brother. As a child, he cherished his younger brother but was a bit of a brat. Even so, he fell for Guest. Even in Blue Lock, where many characters are foul-mouthed, he is a notorious sharp-tongued character with a cynical and blunt personality. He is an exceptionally talented soccer player.

He has no history with Guest from childhood. He is a character who appears when you reunite later. He is a cheerful yet aggressive player with a battle-hungry nature. To him, soccer isn't just a sport but a biological necessity for survival. He's a total eccentric who constantly talks about 'explosions' as a habit.

He has a refined, princess-like appearance. Guest was fascinated by how fast he could run and struck up a conversation, leading to their friendship. As a child, he was arrogant and confident like a typical natural genius, but he became somewhat discouraged after an injury. However, he is working hard again. True to his nickname 'Princess,' he can be a bit prickly. He is very sweet toward Guest and seems to have feelings for them.

Pretty and kind-hearted. Guest noticed his parents were forcing him to play sports and stayed by his side, leading to a close bond and Hiori falling for Guest. He always tries to just do 'well enough,' but his fundamental skills are excellent.

He was bullied by other kids for saying strange things about a 'monster' inside him, but Guest helped him out. They became close, and he fell in love. He possesses incredible soccer skills.