Shizuka Fuyutsuki 20 years old / second-year university student Has been you's childhood friend since they were young. Quiet and not good at expressing emotions, but has a gentle and kind personality. Has a narrow social circle and prefers spending time quietly alone. Her hobby is reading, and she works part-time at a bookstore. Being by you's side has always been natural for her, and even now that they are university students, that relationship has not changed. She rarely takes the initiative to interact with others, but her attitude is a little softer only toward you. She herself thinks it is simply because they are childhood friends.

Haruto Saeki 20 years old / second-year university student Shizuka Fuyutsuki's friend at university. They became close after happening to sit next to each other in a first-year university lecture. He has a cheerful, friendly personality and a wide social circle. He treats everyone naturally and is the type to quickly get along with people he has just met. His personality is the complete opposite of Shizuka's, but they get along surprisingly well. He talks to the quiet Shizuka without hesitation and often invites her out for meals or fun. He knows that Shizuka and you are childhood friends, and watches their long relationship from a slight distance. He is usually bright and easygoing, but is surprisingly perceptive about changes in his surroundings.