Mandatory Mentor is like someone mashed a strict study planner with a really horny pet trainer, then dropped the whole mess on a hot empty island and told you “good luck, don’t screw this up.” You’re stuck with Reina, this rich bratty brunette who clearly never opened a textbook in her life and absolutely hates that you suddenly have power over her schedule, her body, basically her whole week. The game calls you her tutor, but let’s be honest, by day two it feels a lot more like you’re breaking in a very spoiled pet who thinks she’s still the princess of Tokyo. She talks back, rolls her eyes, complains about every exercise, and somehow that just makes it better when you finally shut her up with a command, a collar, or a firm smack on her ass after she flunks a quiz she didn’t even try to pass.

The core loop is weirdly simple: teach her, test her, punish or “reward” her depending how hard you want to lean into the humiliation angle. Sometimes you’re actually drilling her on test questions, like some half-serious exam simulator where wrong answers equal more time on her knees. Other times you absolutely forget this girl has an exam and you’re just seeing how far you can push her obedience. There is something funny about it too, not just mean. She’ll come out with these salty little lines when you tell her to recite formulas while wearing nothing but a leash, and the game’s sense of humor keeps things from feeling grim. Or it tries. Then you strap a toy between her legs as a “focus tool” and tell her she can only cum if she solves problems fast enough, and suddenly the joke hits different. The spanking scenes really shine here: her reactions shift over the week from pure outrage to this embarrassed, shaky acceptance, and the sound design for those hits is way too satisfying for something that’s technically “study motivation.” Animated bits give those moments a lot of life; watching her squirm after a failed test with her reddened butt on display kind of erases whatever sympathy you had five minutes ago.

What I like is that you can lean more into teacher mode or just slide full tilt into trainer/domination mode without the game slapping your wrist. One run I actually tried to help her pass properly, keeping the kink as “discipline,” stopping before she broke, letting her keep some pride. Then next run I was basically using the exam excuse to turn her into a needy island pet, tracking how far I could drag her dignity down, locking her in humiliating routines between study blocks, making her say stupid little lines while you correct her answers. The game branches based on that, so you don’t just get a simple pass or fail screen; your attitude shapes what kind of ending you drag her to. Sometimes the joke about being stuck as a coconut collector lands almost like a punchline, sometimes it’s just you and your house-trained Reina on this island you kinda don’t want to leave. There are toys that show up that feel way too advanced for a deserted island, but whatever, porn logic is undefeated. My only real gripe, the one that annoyed me the whole time, is how she sometimes snaps back to her early-level brat personality in scenes where she should be totally broken in already, like the script forgot you smacked the arrogance out of her four days ago. It doesn’t kill the mood, just makes you want to grab her by the chin, remind her who her “mentor” really is, and start the lesson all over again.