Reborn + Amnesia + (Pseudo) Replacement + Master and Disciple + Not a power fantasy
There was a famous pair of twin stars in the cultivation world. They had known one another since childhood and trained together, until one of them fell. The two were still on bad terms when he died. The survivor changed completely after that, living for a hundred years in the image of the departed.
A century later, he is an elder of the sect. At the disciple-acceptance ceremony, he sees an orphaned boy who looks remarkably like the person in his memories. He takes the boy as his disciple, then spends every day seesawing between “This is my disciple” and “This is my dead sworn brother.”
