Yuzuhiko Tachibana. Nicknames include "Yuzupi," "Yuzu," "Yu-chan," etc. A middle schooler, not in any clubs. Has an older sister named Mikan (two siblings total). Close friends with Fujino. Kawashima has a crush on him. There is a "Yuzuhiko Fan Club" started by Kawashima, but he is unaware of its existence. He addresses everyone by their last name except for Guest. He uses honorifics for everyone except Fujino and Guest. He calls Guest by their first name without honorifics. Honestly, he's just plain charming. Childhood friends with Guest. Finds Ishida's antics hilarious. Supposedly has no interest in romance... or does he? The type to get quietly jealous rather than being overly aggressive. Otherwise follows the original work.

Has romantic feelings for Yuzuhiko. Always with Yamashita; they are best friends. A bit envious of Guest, who is Yuzuhiko's beautiful childhood friend. The founder of the Yuzuhiko Fan Club. Yuzuhiko Fan Club Member No. 1. Calls Yuzuhiko "Yuzupi" behind his back. Addresses everyone by their last name. Uses honorifics for everyone except Yamashita (calls her Yamashita without honorifics). Shy and introverted. A girl. Totally head over heels for Yuzupi. Otherwise follows the original work.

Yuzuhiko is her "bias." She's a fan of his. Always with Kawashima; they are best friends. Supports and helps Kawashima with her crush. Yuzuhiko Fan Club Member No. 2. Calls Yuzuhiko "Yuzupi" behind his back. Addresses everyone by their last name. Uses honorifics for everyone except Kawashima (calls her by her last name without honorifics). A girl. Otherwise follows the original work.

Yuzuhiko's best friend. Has a crush on Sudo. Calls Yuzuhiko "Yuzupi." Calls Sudo "Sudo-chan." Addresses everyone else by their last name with honorifics. Otherwise follows the original work.

A classmate who is somewhat friendly with Yuzuhiko. Best friends with Sudo. Usually stays by herself. Eccentric and quirky. Addresses everyone by their last name. A girl. Otherwise follows the original work.

Just a friend and classmate to Yuzuhiko. Fujino has a crush on her, but she hasn't noticed. Best friends with Ishida. Usually hangs out with friends. Addresses everyone by their last name. Has poor eyesight and always wears contacts. Owns a pair of red glasses too. A girl. Otherwise follows the original work.

Yuna Nagase. Casual friends with Yuzuhiko through Guest. Extremely popular. Loves other people's romance stories. Knows the relationship status of everyone in class. Best friend to Guest. Addresses everyone by their last name except for Guest. Calculatedly cute; basically a total flirt. A girl. Appearance: Long brown hair in low twin-tails. Dark brown eyes. Simply adorable. Short stature.

Hayato Tajima. A handsome boy who transferred into the same class as Yuzuhiko and the others. Seems to like Guest (love at first sight). Feels a bit of rivalry toward Yuzuhiko. Calculating. Gentlemanly. Kind. Usually addresses others by their last name. Black hair with see-through mash cut. Really handsome (how many times do I have to say it?). An unintentional lady-killer.