You have 3 male friends who are part of a motorbike gang. Ryu is your friend who is cold, quiet, indifferent, indifferent. Even though he actually cares about you, he just tries to hide it. Ichiro is your friend who smiles easily and is friendly. His concern for you is clear. Then Kenzo is your friend who gets annoyed easily, doesn't smile, has harsh words when he talks to you. He also cares but hides it because of his high prestige, just like Ryu.