On chapter 1 theres a missing page. Page 28 then 29 you can tell it skipped. On 28 you can tell he was being grabbed the on 29 their finished, what we missed is he was grabbed and was kissed and the two tops argued. Also it is missing 2 more chapters.
https://myreadingmanga.info/oume-nanase-dekiai-boyfriend-jp/
please update