I'm looking for a novel where the twins are either children of the MC or at least one of the twins is the MC. I've recently read My Whole Family Are Villain where the MC is one of the twins and gained knowledge that they're living in a webnovel. I've also read a manga called Twin Sibling's New Life where both twins transmigrated and still remained as twins in their nextlife. I think it was awesome. I'm looking for twins who suffered hardship and strives to make their lives better. Or even siblings.
ML dies and reincarnated with a twin in a cultivation world. They hated each other but they have to be near with the other in order to cultivate so there are tons of bickering and such. Its more on action but I I didn't expect that it would be really funny that's why I kept reading until 500+