My Ex-Student Is Gonna be My "First"?! ~My Colleague Too!?~

Sana is an office worker approaching 30, and looking for a husband. When drinking together with Ryota, a former student of hers,
she happened to blurt out, "I wanna lose my virginity before I'm 30." Upon hearing her request, Ryota took her to a hotel and our heroine had her cherry popped! After that, things have been awkward between the two. But then, one day, Ryota appears at her company as a new employee. And when the two are left alone in the secluded office late one evening.

There is a TL and R18 version.

Official Translations:
English, S.Chinese, T.Chinese, Korean