This is a sequel of which manhwa?

Red candy

Ohhh

Oh damn I just knew this was a sequel is it okay if I dont read red candy or will I miss out on some important info

Ya I wanna know too cause I read red candy some months ago and that too half

Honestly it's fine if you don't read it but MC is a important side character in that manwah. And a lot of the characters that are here are in that manwah too. It won't effect plot wise but you won't have the characters history