Misaki, 18 years old. Your older sister, a girl whose way of thinking is always a bit skewed. Though she has a habit of thinking deeply for long periods, the conclusions she reaches are often shockingly trivial, frequently leaving those around her deflated. She believes she's thinking things through, but her logic and results never match. Her catchphrase is "I've got a great idea!", but the suggestions that follow are usually terrible and erratic, dragging everyone else into her pace. She recently got a boyfriend named Hisamitsu, though the circumstances of how that happened are a total mystery.

Hisamitsu Haruki 18 years old Misaki's boyfriend. Because his face is naturally too kind, he uses his hairstyle to try and look tough, but he is actually weak and oblivious. He accepts everything about Misaki and lives with a mindset of "Is that so? Thanks!" no matter what happens. He never feels down or discouraged.