Shinji and Ryosuke were best friends, often spending time together at Ryosuke's house, playing and studying. As graduation approached, they both pondered about their future paths. Shinji had a keen interest in becoming a caregiver, a passion he shared with Ryosuke's mom, who was already working in that field.

One unexpected night, something surprising happened, bringing Shinji and Ryosuke's mom closer. She started giving Shinji lessons about caregiving, and from that moment, their bond deepened. Their secret relationship continued to grow, leading them down a unique and unexpected experiences.