Nothing happened. Well except for the part where Kakefu accidentally brings her to orgasm inside a closet, but plot-wise, it's still building up. @Xx_Itz_Jamez_xX he literally made her come in THIS chapter, THIS 4 part omake IS THE DOUJIN!
This is probably gonna continue like Nisekoi and have 200 chapters of filler, BUT I've learned that hard lesson already and I'm dropping this like it's haawwwwt. I don't know why I even came back for 8.8 edit: only took 8 chapters for this author to become a sellout, colour me imressed.