[Marialite (shida)] How a Dull Office Worker Became One with His Hottie Superior [BoundaryTL]

A meek office worker turns the tables on his flawless superior Ryouko, using a brainwash app to mold the proud, thick-thighed beauty into his doting girlfriend before setting his sights on her equally stacked sister Sakura. What begins as private punishment between boss and subordinate spirals into a full harem scheme of body swapping and gender-bending, leaving the mastermind inhabiting a curvy new form and declaring it the best body ever. Between sloppy deepthroat sessions, sister-on-sister kissing to bind them as one, and devoted servants pledging themselves for life, the escalating power trip closes with a teasing promise of more brainwashed beauties to come.