Let Go, Master! I'm Not That Kind of Person!

After thirty years stuck in another world, he finally unlocks his system—teach disciples, gain power, extend life. The stronger they grow, the greater his rewards. Simple plan, until his first disciple, the one he raised from nothing, betrays everything. But she remembers differently: in her past life, she abandoned him for promises of glory, only to die alone and broken a century later. Now reborn, she'll do anything to stay by his side—even if he doesn't understand why his 'traitorous' disciple won't let go.