Talk:Houchou Shoujo Gensoukyoku (包丁少女幻窓曲)/guide/@comment-26383442-20151212152325/@comment-27611520-20170305022514

You know the room where you acquire the Black Orb? There's a door in the background of it. It's locked initially, but I believe you can enter once you beat the final boss. (Not sure: I'm still stuck on the final boss. Speaking of which, does anyone know how to beat that projectile-firing nuisance?)

Edit: I beat the last boss and sure enough, interacting with that door brought me to the Nightmare level. (Warning: the secret boss FACE makes everything in the game seem stupid easy in retrospect. The second form is murder.)