MTL - This Cannon Fodder is Covered by Me! - Chapter 47 I covered this star

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

Lu Lingxi died.

As a child born by his parents through precise genetic matching, for eighteen years of his life, he lived entirely for his brother, who had leukaemia. He was his brother’s shadow, a “medicine reserve bank” for his brother’s treatment needs.

Umbilical cord blood, stem cells, bone marrow… whenever his brother needed it, he would have no choice but to quietly lie on the operating table.

Until the last time, when his brother needed a kidney and he never came off the operating table.

When he opened his eyes again, Lu Lingxi became a teenager with the same name Lu Lingxi.

Freed from the shackles of his fate, he possesses the mysterious ability to communicate with plants.

Raising flowers, gardening and running a farm, Lu Lingxi begins a very different life!

Ukei Kaito fought a desperate struggle in order to fulfill his role as a summoned hero. He defeated the Demon Lord and saved the very world, only to meet an end filled but with betrayal. The companions that he’d trusted throughout his journey betrayed him and killed him by sticking a blade through his chest.

The MC entered the body of the An family eldest son, An Ziran, an arrogant 16 years old boy who weighed 78 kg (~171-172 lbs), who only knew how to eat, play and sleep. Seeing his current body, An Ziran decided his first priority was to LOSE WEIGHT!