After breaking off the relationship, all my summoned beasts were dark creatures.

Summary

The strongest professional, Gu Chen, was reborn after being backstabbed by his younger brother, returning to the year he was 18, before his profession had even awakened. In his past life, even though Gu Chen was abandoned by his father with a peasant family and oppressed by his stepmother and younger brother, the grown-up him still regarded them as family; his constant concessions ultimately led to the backstabbing at the very beginning. The reborn him has fused with the Demon King's blood and decided to choose a new path, breaking off all ties with his family to become a Dark Summoner. Relying on his overpowered talent and past-life experience, he has kicked off his path of leveling up!