Mitou Shoukan://Blood-Sign - Volume 9, Prologue

This is a novel about a former human becoming a demon because of a game . Living the life as a demon from the abyss and crossing to other worlds.( there will be different systems in use.. different plots... different Powers. expect cultivation system, game system, magic system and much more ).His main objective is to destroy and cause chaos among the multi universe. Also this novel is using a ranking that affects both the anime verse and comic verse. Void becomes a primordial demon and step by step changes the view of all races about demons.demons are not weak , demons are pure chaos. Note the MC is cruel and indifferent to life . A dark novel.. don’t expect a son of destiny... Infact void isn’t a villain he is much much cruel . Don’t read if u are weak minded.

Nine Realms Sword Emperor, a legend returns, leveling everything.Genius monsters, trampled underfoot, powerful beings, wiped out with a wave of a hand.If people do not offend me, I will not offend them; if people do offend me, annihilate their entire family.

Mages, swordsmen, gods, demons, and prophecies. The Heavenly Games is a tournament where myth and man meet, a purgatory where the dead arrive to fight for their one true wish. Amongst the reborn are Dasha Pang and Kazi Hossain; one a professor from the west whose cold-hearted intelligence has surpass the gods; one a traveller from the east who has come to appreciate humanity. A villain and a hero. The boy born unwanted and the guided one. A martial artist and a mage. Gods amongst men.Expect battles of epic proportions, stories ripped straight from mythology, interactions between gods of various pantheons, and duels humanity has debated for centuries.Expect the Strongest Among The Heavens.***+ Dual Protagonists. Overpowered geniuses. One MC that is villainous and manipulative. The second MC that is heroic and kind.+ Detailed power system that includes Western Magic & Chinese Cultivation/Martial Arts (Xianxia)+ LitRPG, dungeon crawling, fantasy guilds, and more! + Abrahamic religions, Hinduism, Indigenous (Americas & Australia), Greek, Norse, Egyptian, and Japanese mythology

The story is about a a hitman, Who dies because of his own recklessness and transmigrates into a game he used to play after his retirement as a hitman.I'm not gonna spoil any further, but i might answer few of your questions.Is MC overpowered?Nope, he'll become strong over time and all battle he'll fight will be because of his effort and techniques.Is there magic and adventure?Yes! It have both magic like normal isekai with adventure and fighting with monsters and many other things. There are other important things like “Essence Stone” But let's talk about it in the chapters.There will be harem?Not really, He will be in contact with many beautiful female and males but one waifu but i haven't decided yet.All i can say is, give it a try, I'll try my best to make it worth your time.