Re Start

Ha-Joon Park had always been the unwanted bastard child of the family, mistreated by everyone except his step-brother, who tried his best to keep his scheming step-mother away from him. After years of harassment, he decided enough was enough and dug up family secrets and threatened to reveal them to the public...only to be kidnapped and shot 24 hours later. After getting shot he suddenly wakes up in his 12-year-old body, having been granted another shot at his shitty life he decides not to waste a moment and begins plotting the downfall of his terrible family.

Slight science fiction (due to reincarnation), romance, suspense, murder mystery, rich family drama, and cliches are thrown left and right.