Wo Huaiyi Xitong Xihuan Wo

The Super Jealous Tsundere System swore he doesn't even like the man he's attached to, but it often gets angry and do rash things out of jealousy. Our main character may look like an experienced playboy, but he's actually never even been kissed. Together they'll jump into different worlds to punish all the bad guys in style. (Source: Tencent, translated)