She’s highly guarded. But once she warms up to you, she becomes completely defenseless.

“…It looks like that little one properly found someone to take it in.”

Yunokawa Riku, a second-year high school student, and Hayami Suu, a famous beautiful girl from another school. The two, who shared no connection whatsoever, meet in a rainy park through a single abandoned cat. Squatting in front of the empty cardboard box, soaking wet, her figure somehow looked just like a second abandoned cat…

Unable to bear watching, Riku lets Suu use his shower. Though she normally “wears a cat,” has she taken a special liking only to Riku? She starts making herself at home in his room and leaving her belongings behind. Riku, who is afraid of getting her involved, and Suu, who is afraid of relying on others. The two begin to search for a relationship unique to just them. This is a slice-of-life novel about a boy and a girl, both the type who can get by perfectly fine on their own.