Isekai Maou to Shoukan Shoujo Dorei Majutsu - Volume 10 Chapter 3 part3-4

Ji Chen Ai has always wanted to be a good person until he was physically disabled for some reason.

When he is being neglected by his parents, Ji Chen Ai just smiles. When he is being bullied by his brother, Ji Chen Ai just smiles. However, when someone pushes him and his wheelchair down the stairs, Ji Chen Ai can’t smile anymore.

But why is it during this time, that something came out suddenly and tells him that he must be a good person?!

System: Our goal is — No! More! Bad! People!

- Description from Novelupdates

Following a brutal and tortured death, a former assassin, known only by his codename Kuro, is given the opportunity to reincarnate in another world, a world with magic and monsters. Armed with an unrivaled healing factor and an inhumane pain threshold, Kuro opts to go for a reckless direct approach in this world instead of a stealthy and cautious one, and as a result, slowly gains attention bit by bit.

Having previously been a loner in his old life, he interacts and befriends people for the first time in his existence, however, his blunt nature also sees him making just as many enemies, both big and small. By combining his old assassin skills with the magic powers of this world, along with his high resistance to pain and rapid regeneration, he doesn't take long to establish himself as a formidable force in this world.

Initially, Kuro only faces minor threats, like weaker monsters and bandits. But before too long, the threats slowly but surely become more and more severe…from Zombies to a bloodthirsty empire to Vampires and Demons, and even divine beings…however, as the enemies he faces grow stronger, so does Kuro, gaining rare powers that have never or rarely ever been seen in this world…

Qin Chuan arrived in a parallel world and got bound to a system.

Ariadna Lereg Ilestri Pre Agrigent. And so my life begins with this ridiculously long name, born to royalty and the center of attention — all because of one dangerous man; the veritably insane tyrant king, ruthless conqueror of ten empires, nightmare of all continents… and my father?! Will I be able to survive this maniac?