Reborn as a Cannon-Fodder Loli: Don't Let the Heroine Tame You

[Gender-bending transformation + yandere + romance + healing + cuddles] My name is Kui Xiaozhong. I think I transmigrated. And there’s something inside me claiming to be a System. Is this one of those wish-fulfillment stories, with epic face-slapping and a rich, beautiful wife waiting for me? Wait! Why am I so short? No... No! Where did my holy sword go?! System: “Host, forget all that for now. You’re a cannon-fodder villain. If you don’t do something, you’ll probably die very soon.” Seriously, what kind of hellish setup is this? What do you mean I’m a mistress who likes the male lead, bullied the heroine for three years, and eventually got taken by her? Do your best, Host. I believe in you.