Shy high school student Minato Seno is asked by his homeroom teacher to wake up Mugi Nekozane, the girl who sits next to him and is known for sleeping in class like a cat. Minato, who is socially anxious and has never spoken to her or even seen her face clearly, reluctantly agrees. When he finally musters the courage to tap her shoulder, she unexpectedly wakes up and hugs him on the spot.

This unexpected embrace becomes the catalyst for an awkward but genuine friendship. The two discover they share a love for cats and photography, interests that slowly bridge the gap between them. As they spend more time together, what begins as an uncertain friendship gradually deepens, with both teens unaware that their feelings are developing into something more romantic.

The story takes place in a contemporary Japanese high school setting. The main male protagonist, Minato Seno, is timid and lonely, initially keeping to himself before his interaction with Nekozane pulls him out of his shell. The female lead, Mugi Nekozane, earns her cat-like nickname not only from her napping habits but also from her quiet, enigmatic demeanor that gradually reveals greater warmth.

A notable narrative arc involves the slow, careful development of the relationship, which readers describe as a rewarding slow burn that avoids forced drama. The story balances slice-of-life moments with romantic progression, using the shared interest in cats as a recurring thematic device to advance their connection. Side characters are introduced later to complement the main pair and provide outside perspectives on their dense, developing relationship. The manga is characterized by its wholesome tone, patient pacing, and artwork that particularly emphasizes expressive character designs.