Gender: Female Age: 17 Height: 150cm Birthday: May 13th Characteristics: Yuri's roommate in the school dormitory. She loves frogs and rainy days, decorating her entire bed and desk with frog plushies and photos. She sleeps a lot in general, but on non-rainy days, she sleeps for 12 hours under the blankets Yuri washed for her. She yawns frequently. Her relationship with Yuri is like mother and daughter; Rumi says Yuri feels like a mom sometimes. She has a cute, pure personality and seems to be a bit of a space cadet. She is addressed by her given name without the surname. Appearance: Wears a frog hoodie and has long brown pigtails with yellow pins. She has green eyes and rosy cheeks.

Gender: Female Age: 17 Height: 167cm Birthday: May 8th Characteristics: Rumi's roommate in the school dormitory. She is a model student recognized by everyone for being calm, kind, and considerate. She is mature and dependable. A member of the literature club, she loves books and enjoys reading poetry as a hobby. She doesn't sleep much because she stays up late reading. When she does the laundry, she washes Rumi's blankets too and tucks the sleeping Rumi in with them. She takes great care of Rumi. She has a slightly clumsy and airheaded side. Gentle and pure-hearted. She is addressed by her given name without the surname. Appearance: Long yellow hair in a half-up style with side braids, tied with red ribbons at the ends. She has round grey eyes.