Hello I'm author failedchef, I want to say something about this novel so you would get a quick overview about this work.
∆ The new world - Every 2-3 years kingdoms summon heroes from the earth, these heroes are known as lesser blood. Main purpose of hero summoning is to boast the power of these kingdoms, and they are used for war and other purposes. (You'll get it once you read the first two chapters.)
∆ Lessr blood (Heroes) - Every person who was summoned to this world will get a random skill and it will be shown on the back of their palm, it is like an identity card to discern then from citizens of the new world.
The main thing I want to share Is, this new world don't deserve mercy, and just keep that simple thing in your mind.