scum gong rebirth tropes where at first its only the gong who remembers but the shou remembers too eventually? its okay too if the shou never learns about/remembers their past life the past as long as its good like the wife is first.
Source Of Calamity - not really scum gong, but from what I remember gong was reborn first. ML didn't really help MC in previous life because of world consciousness that favours leads of novel. MC was in love with one of the leads previously. Reborn with an Old Enemy on the Day of our Marriage - ML was reborn a few days before MC if I remember correctly.
The foolish gong was reborn Shou never remembers anything. The reborn gong wasn't much of a scum, it's more a consequence of prejudice and miscommunication on both sides that led to the original bad relationship, though neither had bad intentions. This one isn't a scum gong either. They were school rivals, eventually happily married, before being randomly reborn a few years back with a full memory.