MTL - The Fallen Merman - Chapter 164

The story is about a boy entering high school, who answers a strange call from a public phone one night. The caller challenges him to a bet: She’ll remove the birthmark which he sees as the cause of so many problems, and he’ll have fifty days to win the heart of a girl he’d considered far beyond his reach. And with this, a very strange summer begins.

Zhou Shiguang realized that everything she owns stemmed from a misunderstanding. That day an incident occurred and changed her fate. Now, she has nothing. Facing continuous harassment from her adoptive parents and Zhou family’s true heiress, Shiguang feels like she’s at a dead end.

In her desperation, she clings to Meng Yungui, the third heir of the Meng family. But this heir is definitely not an easy man to please. He may be rich and powerful but he’s got an awful personality. And yet Shiguang decides to persevere. She walks on thin ice with Meng family and every step must be taken with caution.

During this time, her career as an aspiring actress also begins to grow rapidly. From extras to lead roles, her experiences slowly extinguish her innocence and kindness, hardening her heart. And seeing this change makes Yungui gradually fall for her…

- 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.