Hell App (Web Novel CN) - Chapter 71: Math Class

A con-man and policewoman that are legends of their respective professions suddenly die, then are reincarnated and return to the Tang Dynasty of ancient China as little kids.

Accepting their second chance and forced restart, they choose to use the modern knowledge and specific talents that they have in their previous lives in order to live comfortably in this new life.

- Description from Novelupdates

The story is about a man whose compulsive tendencies make it impossible for him to keep a job, and a young girl who skips school and loves insects. The two meet, come to support each other in reintegrating into society, and fall in love. There’s a problem, however: namely, the parasites in their heads.

The course of commitments never did run smooth.

After dying on Earth, the King of Mercenaries is reborn as Su Mo in the Firmament and Continent. In this brand-new world, Martial Art is the way of life, and the strong set the rules.

Having awakened a Martial Soul of the lowest rank, possibly meaning he will never go far as a Martial Artist, Su Mo is determined to rise to the top again nonetheless.

However, misfortunes never come singly. The love of his life is soon taken by one of the most powerful forces in the world. With no time to spare, watch as Su Mo overcomes all odds and struggle on the verge of death countless times, in order to meet his love again.

As the protagonist reaches the top in that world, he has to take on more responsibilities and face new challenges.

Follow Su Mo on his relentless journey to become stronger for the sake of those important to him, and uncover the deep, dark secrets and plots in the vast universe.

- Description from Novelupdates

One of the top expert killers, tired of endless assassinations and having survived a cruel and suppressed life, decided to escape the world’s strictest assassin organization.