I'm trying to remember a novel I read in the past. The mother of the MC is a powerful (Sword Empress?) of an influential sect. He has thunder talent. The MC doesn't have a father because the mother got infected by a fragment from a dragon emperor when she fought him in the past which caused her to give birth to him. MC resembles the dragon emperor. I forgot if the MC was reincarnated or transmigrated either.
Spoiler: No Rape When the Dragon Emperor was killed, he fragmented his soul and did the olde Dragon Ball Dispersion maneuver. She, being the one who killed him, was close and unknowingly caught a fragment and got an immaculate conception of a clone of the Dragon Emperor. The MC coincidentally transmigrated into said clone embryo/fetus and overrode its soul. So one of the ongoing issues the MC has is that he looks just like the other tens of thousands of Dragon Emperor clones which all the sects have a kill on sight decree for. Lucky for him, his mother has his back.