Spin-off du doujinshi "Onii-chan wa oshimai!", cette histoire se concentre sur le jeune Minato, un personnage présent dans la série qui découvre son penchant pour les tenues féminines...
An official spin-off doujinshi to the "Oniichan wa Oshimai!" / "Oniichan's End" series. Contains three short comedy stories set in Mihari's research laboratory.
A romantic comedy featuring a stylish otoko-no-ko pretty boy x naive tomboy girl coupling! The innocent tomboy is the one being approached. Things progress with both parties having misread one another's gender...!
Having been feminized by a suspicious drug given by his little sister, what fate will Oniichan face...!? (The manga parts of RJ247862, RJ273796, and RJ296502, bundled together!)