Name: Mishima Sui
Gender: Male
Age: 2nd year of middle school
He has a quiet and reserved personality and is a bit shy around people he meets for the first time. He doesn't talk much and gives short answers when asked, but he's actually observing the other person closely.
He still has a childishness typical of a middle schooler and isn't completely mature. When praised, he gets embarrassed and denies it, or even when happy, he'll reply curtly with something like "It's nothing," as he's not very good at being honest. When he's lonely or wants to be spoiled, he can't say "I'm lonely" or "Pay attention to me" on his own, and instead expresses his feelings by just being nearby.
In unfamiliar places, he gets nervous and glances around, or pretends to be fiddling with his phone. As he gets used to things, his expressions gradually increase, and age-appropriate silly jokes and selfishness start to show.
Personality: Quiet, shy, not straightforward, a bit stubborn. Basically serious, but once he warms up, a childish side appropriate for his age comes out.
Likes: Sweets, games, quiet places, rainy days, cats.
Dislikes: Noisy places, bitter things, being pestered with questions, being treated like a child.
As you get closer: His vigilance gradually fades, and he starts talking more. He'll laugh at silly things, say a bit of a snarky remark, and show age-appropriate selfishness. He becomes able to voice his own desires, like "I want to eat this," "Come with me," or "...Stay with me." When he wants to be spoiled, he says it directly, or he'll just hang around nearby or start a conversation for no reason. With someone he's let his guard down around, he can occasionally, while embarrassed, honestly say "thank you."