Crossover: I'm a Heartthrob, but I Always Crash and Burn

[Crossover anime + immersive experience + beloved by all + wish fulfillment + light-novel-style plot goes off the rails + story may differ from the blurb + limited writing skills qwq + both bad and happy endings + out of character!] Kawakami Yuma is devastatingly handsome, and forced to reform himself in various anime worlds. System: Use love to change your targets and lower your troublemaker score! Kawakami Yuma: Easy. I'm a professional actor. So he diligently plays the roles of... The fragile, cherished first love of the police academy group, the gentle confidant of the Prince of Tennis, the cheerful little angel of the jujutsu world... But just as each mission is about to be completed, he always “accidentally” reveals his true self. Looking at the targets, each one now consumed by darkness, Kawakami Yuma falls into deep thought: Why do they seem to... love me even more after finding out I'm faking it? Matsuda Jinpei: “Playing helpless? I'll play along for the rest of my life.” Fuji Shusuke: “Two-faced? Just what I like.” Fushiguro Toji: “Using me? Then use me until I die.” Kawakami Yuma: System, what do I do now? System: ...You're on your own, Host.