Known as some jade or sword twins in their cultivation world. But Mc dies under the sword of ML according to the plot . And is reborn as mad or fool son of xyz family. But the new body had the same face he had in his previous life. (Similar to Wei wuxian rebirth plot I guess).
I've read this before... Actually I've read two novels with the same version. One is the one with a system? The other has none. I don't remember the title as well, but just adding some info, the one with a system-- mc wear a book and he is the villain there. He did as his character would do, but in the process the protagonist/ml falls in love with him. I dunno, but he died...ml stabbed him with his sword then he died. But mc failed his task and got rebirthed to a body of a fool. That fool was about to be sacrifice... Anyway, I think I messed up the two novels...they both almost looked the same...I even thought it's the same novel. But the one with the system just got translated but the one without the system, I read it long time ago. It's also a book wearer mc? He was stabbed by ml, then died. Then got reborn to the body of a full that was imprisoned with others. That fool was a son of a sect master, but was tricked so he was there. It's an evil sect where they sacrifice people into some hole? Dunno, but mc escape with others. Others thought he was not a fool and was just pretending. Then he escape, meet ml he has his sword. His sword reacted to him? Ml was estatic, then they fell to a cliff. Then flash back....
Not it but you’d probably like Where is Our Agreement to be Each Other’s Arch-Rivals? https://www.novelupdates.com/series/where-is-our-agreement-to-be-each-others-arch-rivals/
I have read that already. I loved it. It was a very good one. Thanks a lot. That's exactly the one I was looking for. To juju48