Blood Shaper - Chapter 57Book 3:

Carrying The Collection Technique through the Naruto World and become Gekkō Kanpū. Hero? It is impossible to be a hero in this life, and I can only do logistics and touch the corpse. The feeling of entering the morgue is like coming home. Everyone in it is full of talents. I Love it there...

Never should be exposed, just the two of them in their youth.「I’ll be making your meals from now on, Sensei.」I, Reiyu Tenjō, am a high school teacher.When I shared some food with my neighbor, it turned out to be my student, Yuunagi Nishiki. If this fact is discovered, I might be fired from the school?That’s why we signed a 『Neighbor Agreement』 in order to keep our secret.Since we both live alone, the plan was to help each other out when one of us was in trouble——but somehow, I got won over by his cooking.Instead of helping him, I find myself increasingly spoiled and dependent that I can’t live without him anymore.‘No, Reiyu Tenjō. He’s your student, someone you are not supposed to fall in love with!’Drawing closer and then apart——their love sways ambiguously like waves.A youth romantic comedy filled with secrets between a teacher and student begins here.

For a million worth of contract, she became a surrogate mother.

He was the chief executive of the Empire and she was of lowly birth. With her adoptive father’s business falling into crisis, she agrees to his contract.

She gave birth to twins: the older brother is healthy, while the younger brother didn’t breathe out. Fulfilling the contract with a huge monetary sum as the reward, she disappeared from his eyes.

Six years later – he was still the cold high-profile president, but when she is accidentally imprisoned in the cage of his golden birds he pressured her harder and harder: “Woman, do not think you can escape my hands!”

The old-fashioned man: “Mu Yazhe, you’d better leave her alone, this is the child’s mother!” The man becomes frightened, questioning the reason this child’s features bears such resemblance to…

- Description from Novelupdates

In this world, orphans or just anyone without any hope for this world can apply to become a “walking target”. Their sole purpose is to be a practicing dummy for the students of the sect who train to become “Demon Hunters”. These students need “walking targets” to test their training on living, walking beings of flesh and blood.
In exchange, they will be provided with food & shelter.
Their existence value is lower than a slave, but if they manage to survive a few years they can receive a life long pension.

Xiao Han is such a “walking target”. One time he witnessed a powerful Demon Hunter disposing a demon. When the demon died, a fragment of the demon that managed to escape entered Xiao Han’s heart. No one saw that, and even Xiao Han himself only felt some discomfort for an instant.

But that thing in his heart soon gave Xiao Han visions, and the first one is of a cultivation method which allows Xiao Han to absorb damage to enhance his body. A perfect cultivation method for a “walking target”.

- Description from Novelupdates