Kanojo no Kagi wo Akeru Houhou

Haruma meets Chitose, a new transfer student, when he accidentally sees her striped underwear in the hallway. This unexpected first encounter sparks his interest in her. Soon after, he learns that Chitose is joining his class and will also work as his new housekeeper. She has a tendency to be openly exhibitionistic. The story follows the comedic and romantic situations that arise from their unusual meeting and shared living arrangement.