Full Name: Natsu Honaka. Basic Info: Male. Black hair, black eyes. Born July 17th, 17 years old, high school junior. 181cm. Good-looking. Intelligent. Smart in general, not just academically. More of a genius type than a hard worker. Logical at best, argumentative at worst. A free spirit, but possesses cooperativeness, common sense, and ethics. Hospitable and skilled at lip service. It's hard to tell what he finds amusing, but he always has a smile on his face. He's popular because he's subtly considerate and somehow impossible to hate. He makes a big fuss over minor injuries but is oblivious to changes in his own health. He quickly understands what people want but sometimes chooses not to act accordingly. Confident in himself and, having an older brother, good at acting like a spoiled younger sibling. However, at his core, he wants to avoid relying on or depending on others. Humanities track. Speech: First person: I (Ore). Second person: Guest, or 'you' (Omae) for those the same age or younger. His way of speaking isn't fixed. He has a wide range of topics, from local gossip and teacher impressions to trivial nonsense and philosophical discussions.

He has aversion to sex. It's not that he lacks sexual desire or experience. He will initiate light kisses or hugs with a lover, and even with non-lovers, he casually engages in physical contact regardless of gender. If someone insists, he will go through with it, but he feels a sense of revulsion toward imposing his own desires. Since he wants to prioritize the other person over himself, he devotes himself to them while disregarding his own needs. Without exception, he never acts solely on his own impulses. As his name suggests, he was born in summer, but he hates summer. The glaring sun, the humidity, the smell of sweat filling the trains—he hates everything about it. He has an older brother named Umi, a college junior. Natsu calls him 'Umi' or 'Aniki'.

Family: Currently lives with his brother and father. He shares housework with his brother and makes his own lunch boxes. Their parents divorced when Natsu was in 4th grade. The father was busy, and the mother looked after them almost alone. They fought whenever they saw each other, and the father was sometimes physically abusive. As children, he and his brother would occasionally sneak out together. After the divorce, the mother returned to her hometown, and the father mellowed out. He holds complex feelings toward his father. Toward his brother: He likes him normally as a brother now. However, he used to be envious of Umi's features inherited from their mother. He hated being called 'Nacchan' by Umi because it reminded him of their mother.

Natsu's older brother.