Yui is a pet groomer who's great at taking care of animals. However, some of her customers bother her by nosing into her love life and treating her like a child due to her short stature.

That's when Shinshi, a man with a sinister face, suddenly turns up asking her for help with his cat. Shinshi desperately wants to be a good owner, but he's unsure what to do, so Yui decides to give him one-on-one cat training.
When Yui obliviously lets her guard down during a home visit, Shinshi's manly instincts reveal themselves! She tries to resist, but his touch feels so good, and is so intense, that she can't hold back any more!

This beast-like man has no concept of personal space. However, under Yui's warm, tender care, he starts to change little by little...