MTL - Space Speed Xing Hen - Chapter 199 War on retaliation (below)

A pervert transmigrates into the body of a character from a novel he was trashing or rather cursing with every fiber of his being. Mid rage-quit, the universe decided to teach him a lesson by dropping him straight into that very cursed world.Reborn as Eren Van Astrea in the realm of Velmora, where summoners reign supreme, he finds himself as the weakest side character imaginable. No summons. No QUOR. A half-elf son of a baron treated as garbage by his own bloodline: mocked, beaten, and forgotten.But when a mischievous god takes interest in his misery and grants him a game-like system, everything changes.Now every insult becomes fuel. Every enemy becomes a future regret. And every face that looked down on him? They're about to meet the ground.Eren isn't just seeking revenge against the family that discarded him. He's rewriting the entire story with himself as the villain they never saw coming.For Character Illustrationshttps://discord.gg/ht8sfcTCcR

The king of assassins was reborn, mastering both alchemy and poison. Sitting inside the space, there was a ghost that loved crying.

Throughout this current life of mine, I will pay no attention to my past lives, nor will I seek future lives. I wish to live vigorously, to pay back debt of gratitude and fulfill duty to avenge, to defeat valiant heroes from all species, and to proudly laugh at all the Gods and Demons of the Six Path of Reincarnation!

- Description from Novelupdates