As the manga messiah this type of content is a complete waste of time but I do this for the people that seek good content.
Basically its some obese kid that gets bullied and literally everyone hates him and thinks hes disgusting just because he is fat. They act like he cant have talent or do anything because he is fat. He will walk in the hallway and get his ass beat, girl look at him and get scared. He blames his mom for him being fat because she puts eggs in his ramen?? how about some accountability fatty go to the gym and prove them wrong. Anyways One day he gets beat so badly it goes viral on the twitter and his mom moves him to a different town in a one bedroom(YEAH JUST RUN AWAY FROM YOUR PROBLEMS THX). He was excited running around the city and he ends up getting beat up again goes home crying wakes up in a different body with a six pack and super handsome(BTS rip off). His fat body is next to him and if he goes to sleep in the skinny body he wakes up in the fat body. got it? got it cool. So he goes to school in the skinny body everybody starts meat riding him "omg your so handsome" "hey want to be friends". SO YEAH thats literally it he keeps using the skinny body and using the fat one to work graveyard shifts at a gas station.
Also checked out the manhwa turns into some edgy demon fighting Bullsh*t that last for 400+ chapters. My question is who was reading this garbage ?? how did netflix say yeah guys this the one lets animate this