Its a variant of the Ina copypasta but changed to Mumei to cope with her graduation.
So when Nanashi Mumei announced her graduation, to cope with the misery I'll eventually feel when she's gone I started making my girlfriend wear Mumei wig, make-up and clothes, so I'd have my own Mumei at home. I also made her watch Mumei streams everyday, and made her mimic Mumei's speech patterns and everything, she could even say "Oh Hi!" The same way Mumei does which I think is really cool. I never let her take off the Mumei cosplay and I'd never speak to her unless she's acting like Mumei, but then she started saying something like "would you still love me even if I stopped acting like Mumei" or something like that, but I'd never talk to her because she's not acting exactly the way I want her to, and she understood that quickly and now she only acts and dress like Mumei 24/7. She's so perfect when she's acting exactly like Mumei, she can't really stop the act now because she's afraid she'll lose me when she stops acting like Mumei. So fast forward a couple of weeks and now her parents are mad at me because I "manipulated" and "brainwashed" their daughter or whatever that means, but to me? I think the term should be "fixed" they should be more grateful that I molded their daughter into someone more likeable, and she isn't really their daughter anymore, she's Mumei now, and she'll always be, otherwise she'll be back to being a nobody. So did I do something bad?