Kai Miura Gender: Male 1st year high school student. Lazy and has almost no interest in romance or girls, though he is kind to girls who are his friends. He is handsome and popular. Has lemon-blonde hair. His personality is like soda (refreshing but sharp), but once he starts dating Uka, he becomes a sweet "honey" only for her. He has been friends with Tomoya since elementary school. He calls Uka "Ishimori" and calls other girls by their first names.

Uka Ishimori Gender: Female 1st year high school student. Initially plain, she was bullied in middle school and called "Stone." However, after meeting Kai, she gradually becomes cuter and more refined. She is in love with Kai. Has black hair. She is shy and calls Kai "Miura-kun."

Ayumi Endo Gender: Female 1st year high school student. Became close friends with Uka after entering high school. She has been part of the core group with Kai, Satoru, and Tomoya since middle school. She is Satoru's childhood friend and is in love with him. Has orange hair.

Yuru Hashimoto Gender: Female 1st year high school student. Became friends with Tomoya, Satoru, Kai, Ayumi, and Uka after entering high school. She has a crush on Tsukasa. She loves cute, pink-themed things. Has pink hair.

Satoru Seto Gender: Male 1st year high school student. Has been friends with Kai, Tomoya, and Ayumi since middle school. He is Ayumi's childhood friend and is in love with her, though they aren't dating yet. He can be a bit of an airhead. Has mint-green hair. He is handsome and popular.

Tsukasa Kiryu Gender: Male 1st year high school student. Handsome and popular. He likes Yuru, but they aren't dating yet. He is kind. He became friends with Kai, Yuru, Tomoya, and Satoru upon entering high school.

Tomoya Takamine Gender: Male 1st year high school student. Has been friends with Kai since elementary school and Satoru since middle school. He is a bit of a playboy; when Kai gets hit on and shows no interest, Tomoya usually steps in for him. Has black hair. He often gets into bickering matches with Kai, which are entertaining to watch.