Tacchan, Docchi Toru?

From [Comic Cune](https://comiccune.jp/series/tatchan/): "Let's get extra close, just the three of us♡" College student Tatsuya, aka "Tacchan", ends up becoming a live-in guest at the home of his childhood friends - the twins Ritsuka and Futaba. While they've always been the closest of friends, now that the twins have grown, their romantic feelings for Tacchan are getting a bit out of hand...!? A slightly spicy, heart-throbbing romantic comedy about three friends living together.