WeeperReaper's feed

WeeperReaper asked a question

I've been seeing this one idol novel in my feed that I'm currently lookibg for right now. Please help me.

I'm not sure how it goes but the gist was that they were siblings and MC goes back in time and gets a system? It allows his brother to live or something... I wasn't curious at first but now that my DOD syndrome is coming back, I can't help but want to read a similar genre. The plot looks good and I read a good review so I thought maybe I'd start with that.

Thank you!