LF Doujin Cram School Glasses Guy

I only remember vague details since its been ages, but it was a doujin about a glasses guy and a somewhat alt/punk girl meeting at cram school, and the sex scene had an amazing page that was them underwater when the guy took off his glasses. Vanilla stuff, and I remember it because I seemed to have read it on Fakku way back in the day but can't find anything like it anymore.