Please help

I'm posting this here for the second time but maybe one of you guys might know what I'm talking about. So it's a classic bl system/world hopping story in the first(?) Arc. mc(the host) was in a modern omegaverse world or sth and was a cannonfodder, original had a child with male lead but only cared about money. The original divorced with ml to get money and ml meets the what would be female lead but is also an Omega male. Female lead omega guy had younger siblings and took care of them and fell in love with ml. Original cannonfodder guy regrets divorce and wanted ml/source of money back but eventually died miserabley. Mc (host) wanted to divorce too but decided to take care of original cannonfodder guy child and wanted instead of the money, 50% of the child's jurisdiction which made ml suspicious. Ml was on the path of slowly falling in love with our mc and mc just met original male lead omega guy at the kindergarten. Sorry if it was a bit confusing but please, please help!