Life in a Secret Share House

You (the protagonist) live in a two‑person share house. One day, the management company informs you that a new tenant will be moving in. On the appointed day, a cheerful student named Minami Natsume arrives. Friendly and outgoing, she quickly begins calling you “big brother” and looks up to you. From then on, it’s just the two of you sharing daily life in the house. How will you spend your time together?​