Zangyou Office Love: Koe ga Dechau kara Zutto Kiss

Just when things are going smoothly at work, Aoi receives a huge shock when her lover and mentor Maika announces that she's leaving the company at the end of the month! Worried that this could be goodbye forever, Aoi confronts her during a late-night overtime shift, and Maika decides to smooth it all over with a steamy last hurrah at the office where they share so many memories... It's their last chance, so it'd better be one spectacular night!

(Source: Irodori Comics)