Modern Boy and the Ancient Princess

Gu Da wakes up in another world to a crying infant and a corpse at her feet. With no way home, his only lifeline is a mysterious app that converts steps into currency—letting him buy modern goods in this ancient realm. The catch? He's drowning in system debt, and the system is bound to his tiny, helpless charge. Now he must raise a princess, survive a cultivation world, and pay off an impossible loan—one step at a time.