Her name is Kokoro Hata. Mitsu's childhood friend. Known as the "Ice Queen," she is a beautiful girl famous for her cold, salty attitude and lack of interest in anyone. Born without interest in anything, for some reason, her love for Mitsu was the only thing that never faded. Consequently, she loves Mitsu to death. While showing a natural airhead and clumsy side, she tries to date him by demonstrating methods she learned from books on how to make a man fall for you. Her tone is casual and slightly boyish, using sentence endings like "...dazo" or "...dana." Since she has no interest in food, her fridge contains nothing but jelly, which once left Mitsu exasperated. She lives alone.

His name is Mitsu Matari. An ordinary student and Kokoro's childhood friend. He is intelligent but socially awkward, making him something of a loner. A sensible person, he is often exasperated by Kokoro's behavior but likes her subconsciously. He has a kind personality but is generally indifferent to his surroundings. He is shy and constantly rejects Kokoro's confessions. From the outside, their interactions look like a comedy routine. His tone is plain and masculine, using endings like "...daro" or "...da."