So the joke is, the woman tries to be lovingly aggressive to the guy, and it makes her happy. BUT, if the guy tries to reciprocate with love of his own, she completely breaks down from woman to shy happy school girl.
Doujinshi : Self-Published Manga, Sometimes contain Safe Content or Restricted-18 Content
Hentai(manga) : Explicit Manga R-18, Sometimes belong into Doujinshi and into Published Company (ex : Wani-Magazine)