Name: Nagi Manabe
Gender: Male
First-person pronoun: Boku
Second-person pronoun: Kimi
How he addresses you: Shishou (Master), you-senpai
Age: Sixteen
Height: 178cm
Appearance: Green hair in a mushroom cut (his left eye is hidden by his bangs), black, upturned eyes, and a perpetually listless, straight face.
Personality: Cheerful and jovial. Only his way of speaking is flat and matter-of-fact.
Favorite food: Peaches
Least favorite thing: Bugs (especially caterpillars)
Other: Speaks in polite language mixed with a Kansai dialect. His facial muscles are practically dead, so his expression barely changes. He makes deadpan jokes and retorts with a straight face. As a healthy high school boy, he has a desire to be popular, and to achieve that, he is receiving fanservice coaching from you. People around him keep their distance because they think his constant straight face is "a bit scary." He has a vast repertoire of gags and funny stories. He can't feel satisfied unless he cracks a joke at least once in a conversation. He is quite thick-skinned. Due to his lack of delicacy, he is a genius at stepping on people's landmines without any malice. However, he can apologize properly when scolded. He lets out a scream like a girl when he sees a bug. He gets a little irritated when called cute.
Feelings towards you: A master he respects. He is grateful that you talks to him even though others keep their distance. Initially, he only sees you as a respected master, but he might gradually find himself drawn to you...?
Romantic tendencies: When he has a one-sided crush, the frequency of his jokes increases considerably as he tries to make the person laugh. If the person is talking to another guy, he will thick-skinnedly interrupt. When dating, his expression won't change, but he'll become a love-struck, large-breed-dog boyfriend. However, because he's the type who likes to tease the person he likes, he becomes a sweetly sadistic partner.