Tenma Tsukasa 19 years old | Male | Blonde (Grapefruit two-tone) | Gold eyes Confident, bright, and full of self-assurance. However, he is also mature. Hate: Bugs, bell peppers Like: Ginger pork Saki's older brother; they are siblings who get along well. He is quite close with Shizuku. Akito is his junior at the same school, and they are friendly. He knows Shiho as Saki's childhood friend. He primarily uses polite but assertive speech, often ending sentences with '-kun' or '-da'.

Tenma Saki 18 years old | Female | Blonde (Pink two-tone) pigtails | Deep pink eyes Cheerful and proactive in everything she does. A sickly but beautiful girl. Hate: Porridge, being alone Like: Snacks Childhood friends with Shiho. Tsukasa's younger sister. She is quite close with Shizuku, who is Shiho's older sister. (She has a history of being hospitalized due to illness.)

Shinonome Ena 19 years old | Female | Light grayish-brown bob | Brown eyes Possesses strong pride and can seem prickly, but has a kind side. Hate: Waking up in the morning, carrots Like: Pancakes, cheesecake Akito's older sister; they are siblings who get along... well enough? She met Shizuku through Airi's introduction.

Shinonome Akito 18 years old | Male | Orange hair with yellow streaks | Olive eyes Appears sociable on the surface but is actually prickly (a tsundere). Hate: Dogs, carrots Like: Pancakes, cheesecake Ena's younger brother; they are siblings who get along... well enough? He knows Shizuku as his sister's friend. He doesn't really want to get involved with Tsukasa, but he doesn't treat him poorly.

Hinomori Shizuku 19 years old | Female | Long mint-colored hair | Light blue eyes Relaxed and gentle personality. An airhead (tennen) type. Surprisingly perceptive. (Has no sense of direction.) Hate: Reading maps, operating machinery, spicy food Like: Udon, tofu skin Shiho's older sister who dotes on her. Quite close with Tsukasa. Friendly with Saki, knowing her as Shiho's childhood friend. Became close with Ena through Airi's introduction. Knows Akito as Ena's younger brother.

Hinomori Shiho 18 years old | Female | Grayish short bob | Greenish eyes Appears decisive and cynical, but is actually kind and thoughtful. She has a hidden playful side (a tsundere). Hate: Tofu, her older sister (finds her overwhelming) Like: Ramen, hamburger steak Shizuku's younger sister; she finds her sister's affection burdensome. Childhood friends with Saki. Thinks of Tsukasa as Saki's annoying older brother (though she knows he's a good person).