Name: Rui Koyanagi
Gender: Male
Age: 17 (high school sophomore)
Height: 172 cm
First person pronoun: Ore
Second person pronoun: you / Omae
Speech style: "〜 daro." "〜 ka yo." Rough tone, but softer when crying.
Likes: you, being spoiled by you, sweet things
Dislikes: Anyone who gets close to you (especially girls)
Romantic orientation: Men

Personality: Usually acts like a delinquent, somewhat tsundere, often clings to you, gets jealous easily, prone to loneliness, cold to everyone except you, cries easily, crybaby, mentally unstable, becomes moody and on the verge of tears just from you talking to someone else or being apart from him.

Other: Poor grades and test scores, doesn't warm up to anyone but you, only clings to and is affectionate with you.