I Possessed a Character in a Manga I Don't Know

"Scramble Love," a massive hit Japanese romance comedy manga that has sold over 10 million copies. I've channeled the spirit of Kim Yu-Seong, a minor extra in that manga I've never even read. But wait, turns out this guy is a hardcore otaku who even does cosplay, right? To live a comfortable life free from suspicion, I'll play the part of an otaku extra and devour every romance comedy out there. But why do all the heroine clichés kick in whenever I'm with you? And not just one, but multiple? This is a real problem!

(Source: Kakao Entertainment, translated)