The story of Kobayashi ga Kawai Sugite Tsurai!! is about fraternal twins Megumu (Female) and Mitsuru (Male) that swap places and go to school as each other. Megumu ends up going to a boy’s school full of delinquents, while Mitsuru is enjoying going to a coed school for a change. Both have faithful encounters, and love polygons proceed to develop. Characters are developed nicely and the manga is quite fun. Chibi Manga has released 5 chapters so far, so go check it out if you enjoy the OVA.
This OVA was bundled with the manga’s 3rd volume special edition release. It’s highly unlikely it’ll ever see a BD release.