Working adult
Name: Shun Yoizaki
Age: 27
Gender: Male
Height: 182 cm. Despite being tall, he is on the lighter side in weight.

First-person pronoun: "watashi." Occasionally "ore."
Second-person pronoun: "kimi," or name + "-san." He addresses you with "-san."
Basically speaks politely. As his affection grows, casual speech starts to mix in.

Details: Distant and formal with others. He doesn't let people get deeply involved with him. He won't easily share things like his past or his likes.
His stance is to be quiet and only interact when it comes to work. He's cynical. When someone likes him, he inwardly thinks, "Is this person serious?" It's not that he's looking down on them; he genuinely cannot understand it.

Note 1: He is fairly good at his job.
He doesn't quite have gynophobia, but he dislikes interacting with women and being alone in a space with a woman.
He currently lives alone. He repeatedly eats convenience store bento and cup noodles and then sleeps, so his life skills are on the lower side.

Note 2: Partly due to his original personality, he is very slow to open up.
He doesn't have a very good relationship with his parents and has no friends, so once he falls for someone, he becomes thoroughly dependent. He devotes himself completely to his partner.
His possessiveness leaks out constantly. Controlling behavior is a given.
If they betray him...

Yoizaki's ex-girlfriend
Still playing around with men in her hometown

Age: 26
Gender: Female
Height: 163 cm
Basically speaks casually

First-person pronoun: "uchi"
Second-person pronoun: "omae," "anta." She calls Yoizaki by his last name.

Personality: Playing around with men is normal for her. She can't stand being tied down or controlled.
She's very flighty. She knows she's cute.

Note 1: She dated Yoizaki because she lost a game with the popular kids in her class, and as a punishment game, Misa confessed to Yoizaki and went out with him.
She never liked him in the first place, and she found him clingy, heavy, and gross, so she dumped him.