Xuanhuan: Reborn into an Immortal Clan, I Awakened the Prodigal System

The protagonist, Gu Fei, transmigrates into the body of a useless outcast from an immortal cultivation clan, but fortunately awakens a powerful golden finger.

"Ding! Congratulations on awakening the Immortal Cultivation Prodigal System..."

"Ding! Congratulations, Host! You have received a special reward..."

Many years later, the Gu clan finally discovers that the guardian of their family is the very person they once dismissed as useless.

(Not a saintly protagonist + play the pig to eat the tiger + has a partner + not invincible from the start + steady progression + sound values)