How to Raise a Human [Infinite]

Ke Er Wei is an ordinary resident of a happy town. One day, it takes a liking to a handsome man who has come in from outside and wants him to stay as its pet. But the man refuses, making Ke Er Wei very sad.

To make the man stay of his own free will, Ke Er Wei frantically waves its countless enormous tentacles, showing him its powerful, imposing form. The town residents always look at it with admiration whenever it reveals its tentacles, so Ke Er Wei believes that once the man sees them, he'll feel safe enough to stay.

Sure enough, the man's expression shifts, and he agrees to stay.

Ke Er Wei is delighted and waves its tentacles even more enthusiastically.

P.S. Main character is the top. This blurb is tentative.

Theme: Love can give even a monster a heart.