Karasuma Shuuji, who gets in fights all day every day. Once when he's injured, he's forcefully given medical treatment by the owner of a butler cafe who is overflowing with chivalry, and he falls in love with her on sight!

He may be a Yankee, but his clumsy efforts are very popular with the young ladies.

You'll be shot through the heart by this work comedy with a naive Yankee!