Valkyrie Smash - Chapter 22 Too Deep Into The Zone.

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates

Wu Jin, as a trainee from a certain entertainment company, had a peerless, stunning face. He was qualified to debut as a C-Rank performer even if he just sat there and did nothing.

After signing up for a certain talent show, the shining path to stardom beckoned to him––

Wu Jin: Hold on, why is this show different from what we agreed on? Wasn’t it supposed to be about jumping around, dancing, and singing songs? Why do you have to send me out into the wilderness…

Program Producer: You’re a once-in-a-century high appearance value competitor! We’re relying on you to save the program’s ratings!

Wu Jin: … I seem to be on the wrong show. Wait a minute, this isn’t an idol show, it’s a fighting survival reality show ahhh!!

Ten months later, the little cutie who had been thrown into the show––
Turned into a human weapon.

Powering up through various instances, slight entertainment circle elements.

Extremely overpowered gong x little cutie who grows to become an overpowered shou.

Completed Instances
Round One – Wilderness Survival
Round Two – Cellular Spaces
Round Three – Tarot Card Formation
Round Four – Cretaceous Period Revival
Round Five – Palace of Versailles
Round Six – Time Warp
Round Seven – Ancient Talent Show

A brief single sentence introduction: Debut! Survival reality show!

- Description from Novelupdates

An unnamed 34-year-old Japanese NEET is evicted from his home following his parents' death.

Upon some self-introspection, he concludes that his life was ultimately pointless.

Walking down a street he intercepts a speeding truck heading towards a group of teenagers, in an attempt to do something meaningful for once in his life he manages to pull one of them out of harm's way before getting himself in the way of the truck and dying.

Awakening in a baby's body, he realizes he has been reincarnated in a world of sword and sorcery.

He resolves to become successful in his new life, discarding his past identity for his new life as Rudeus Greyrat.

Read the first chapter. You will probably like it. ;)