Strongest Survival by Otome Game’s Heroine (LN) - Vol 1 Chapter 3: Encounter

A filthy, idiotic, hypocritical alcoholic degenerate, known to most as Ricky Freeman, died in a tragic car accident when his lower half was crushed by a drunk driver. Coughing out a bloody mourning for his balls, Ricky finally dies only to wake up in his next life. Reincarnated in the 1920s as a orphaned kid, how will he live in a universe filled to it's brim with cosmic beings-*DING*'Huh?'[Congratulations Host for receiving the Impregnation System]

A former sporting rifle shooter genius transforms into the ‘Juvenile Butcher’. While originally supposed to have received the death penalty, he was instead fortunate enough to have entered a secret and highly regarded armed force, throwing himself into the ‘Nirvana Project’.

After a period of 10 years, he now has time to freely recover. Having trained until he had excellent military and martial skill, he sweeps through various military districts and returns back to his hometown. Under the monitoring of a beautiful female cop, he re-establishes his family’s bodyguard service, protecting beauties and moving unhindered, his achievements causing the fame of his outstanding, god-level bodyguard service to resound across the world!

- Description from Novelupdates

Good and bad luck has followed Zach ever since he was five. Poor guy. His life has been far from the sweet and peaceful paradise one might expect of the youngest son of one of only four dukes in a great Empire.But a little more excitement than expected doesn't stop him from pursuing his dreams of summoning, and perhaps his luck is finally turning once he manages to summon something great.Armed with maids, a scummy gift of luck, and a strong will, Zach sets out to live life as he pleases, even to the annoyance of those around him. First stop: The Academy.