An official spin-off doujinshi to the "Oniichan wa Oshimai!" / "Oniichan's End" series. Features the crossdressing story of Minato-kun, a boy that appears in the Onimai series.
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.
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!)
Al*ce is set to play the princess in a new production. While getting pointers from Momoka, and with Chie playing a maid, a rather crazy lesson is about to begin...!?