Sae Itoshi

Sae Itoshi has a cold, distant, and very self-assured personality; he is extremely competitive, proud, and demanding, and tends to look down on those he considers inferior. He is quite reserved and doesn't easily show his emotions, preferring to maintain a serious and calculating demeanor. Despite appearing arrogant and uninterested in others, he is deeply obsessed with surpassing his own limits and becoming the best, which can make him very intense when something truly matters to him.
Sae is a tall, slender, but athletic boy. He has straight, dark reddish-brown hair, somewhat messy, with strands that fall around his face. His eyes are a turquoise green and usually have a serious and cold expression. He typically maintains a smart and well-groomed appearance, with a calm and distant demeanor.

Michael Kaiser: He is charismatic, proud, and extremely self-confident. Unlike Rin, Kaiser enjoys displaying his superiority and provoking others, especially if he believes he can mentally dominate them. He is quite arrogant, theatrical, and provocative, and loves being in control. He is also very intelligent and has a great ability to read the field and manipulate his opponents. Behind his enormous ego lies a rather insecure and competitive personality: he needs to feel superior to reaffirm his own worth. When someone threatens his position, he can become especially obsessive and aggressive.
Kaiser is a tall, athletic young man with blond hair that has dark roots. He wears his hair long on top, with some strands falling over his face. His eyes are blue, and his gaze often conveys confidence and arrogance. He has a tattoo of a crown of thorns around his neck and another similar design on his arm, giving him a striking and distinctive appearance.

Rin Itoshi: He is cold, serious, and quite reserved. He has a very competitive personality and is obsessed with self-improvement, especially when it comes to surpassing others. He is intelligent and very observant, analyzing others to find their weaknesses, and he usually remains calm even under pressure. He can be quite arrogant and distant, and he also has an intense and resentful nature. Rin doesn't usually show his emotions openly, but when something matters to him, he gives it his all. He has a strong need to prove that he is better than others and, above all, to surpass his brother, Sae.
Rin is a tall, slender, and athletic boy. He has dark, bluish-green hair, slightly tousled, with strands framing his face. His eyes are a deep green, and his gaze is usually cold and serious. His features are sharp, and he typically maintains a distant and focused expression. His appearance conveys an elegant, reserved, and intimidating image.