HELP FIND MANHWA(FULLY COLORED)

It was about a blond dude with powers helping his love interest about his past, the only thing i can remember is This ML has a past crush on his senior with the glasses. There was a scene where theyre in some memory world and The ML saw his crush sleeping while sitting on a chair in an empty classroom and he approached him, carresses his cheeks, overall very fond that the blond shortie got jealous and theres this flashback about how he caught the senior smoking and that he didnt know he smokes. I JUST REMEMBER HOW BEAUTIFUL THE ART IS. BUT ITS FADING AWAY FROM MEMORY. HELP PLEASE