♂ m

Class: 2-A

♀ f

An extremely introvert girl from parallel class 2С, who is always cold to others and has an IQ score of 190. She usually loiters in the science lab.

♀ f

The protagonist's classmate who works in the school library. She is always shy but with the help of Mao and the others, she begins to speak up a little.

♀ f

Member of disciplinary committee. She is high strung and the self-appointed head of the school morals enforcement agency.

♀ f

Childhood friend of the protagonist. Mao is very active, energetic, and cheerful student of older class 3A.

♀ f

A tomboy girl from parallel class 2С who loves to play soccer.

♀ f

Good friend and classmate of Nana. Expert at cooking udon and has a strong interest of creating new varieties of udon. Like Nana, she also carries an accessory depicting a frog called Juliet.

♀ f

A wealthy girl from parallel class 2С, who can play the piano.

♀ f

Protagonist's younger sister. She carries an accessory depicting a green frog called Iwao.

♀ f

♂ m

President of the Movie Research Club. He always forces the protagonist into helping him with the movie films. He has a mental list of trivia about almost every girl in the school even though he is "dating" someone from another school, "Male Prudence" he calls it.

♀ f

School's teacher for modern Japanese language and adviser of swimming club. She is Mao Mizusawa's home room teacher.

♀ f

♀ f

♂ m

♀ f