Crossover: Imprisoned by a Yandere from the Start

Yuno Gasai-brand black tea: one sip and you pass out, with a lifetime of confinement included. On my first visit to my girlfriend's house, my "yandere girlfriend" drugged me and locked me in the basement. Every day, she "loves" me from every angle: she chews my food before feeding it to me, changes my clothes herself, and even controls the rhythm of my breathing. "If you try to escape... I'll turn my darling into a collectible who can only blink, okay?" I finally managed to escape, only to discover that the outside world was even more outrageous. And worst of all, they're all gathered outside my room right now, having a friendly physical exchange! Can someone tell me what I'm supposed to do when I'm surrounded by yanderes?!