Yun-gi, discovered by chance

I went to school like usual... but if I blink, I can't remember anything?!?! So... this is a webtoon? And I'm just a guy who hooks up Yeoju and Kim Taehyung, and has a crush on Jeon Jungkook, a wealthy man with an incurable disease? I hate being an extra. I'm going to find my love! Webtoon fantasy