Dream God Ring: I Become Stronger by Day Dreaming

Draven, an illegal weapon dealer from Earth, transmigrated into the body of a youth in a magical world. The youth, who shared his name, had died after his bloodline was forcibly stripped away, allowing Draven's soul to enter his body. In this new life, Draven's only blood relative is his little sister. Finding himself in the body of a eight-year-old with a two-year-old sister to care for, Draven was at a loss for words. Fortunately, the entity that had brought his soul to this world left him a divine artifact as his legacy: the mysterious Dream God Ring.....