Insaeng Jonmang 2

This isn’t the life I wanted!!! After reliving high school as Jin-U, the boy he once bullied, An-Cheol is now a new person. But his new life takes an unexpected turn. Once again, he is sent back in time to live as Jin-U. But this time, Jin-U is also back... as An-Cheol!
(Source: WEBTOONS, edited)