[FANBOX] [Sakayama Shinta] Watashitachi ga danjo no kankei ni naru nante arienai hanashi

This is a long-time veteran ero-mangaka. Search "Sakayama" and you'll see some of their older doujin, they are pretty good as well.

I guess it's my turn to write a crappy summary lol: Girl (G) asks Boy (B) what university he's going, B is not sure, later they go to same U and meet at entrance ceremony. They graduate and work same place and go to same business trip to a deserted island. (Checkpoint) Somehow, they end up in the same futon. They drink again, G is drunk, B is ogling lustfully at her, they have sex. Pg 6 says they did two more times (go to Checkpoint, rinse and repeat) then return to main story (pg 7). Post-nut clarity, they feel guilty (says some Japanese idiom about situation), and both end up confessing they were virgins and their first time having sex, G proceeds to chow down very happily (open ended ending). My guess for ending: they date, marry, have kids, happily ever after together. The End.