Ito Toshinori

Four evil people I hate so much I want to kill them have been gathered together here… Only one among them will be killed… What crimes have these four committed? Official English; https://coolmic.me/titles/354#

Ichiro, an ordinary otaku office worker summoned to another world, was deemed an "Outsider" who— unusually— possessed no special abilities at all, a true "powerless one." However, he soon "awakened" in that world to discover that he was in fact endowed with a forbidden incubus-like power: the ability to dominate women through his own sexual essence. Realizing this, Ichiro begins using the seductive arts born of this demonic power to win over one beauty after another, including alluring women and youthful heroines...

After being expelled from his family home, our main character tries his hand at becoming an adventurer, only to find out that things aren't quite as they seem. Determined to change his fate, and with the money he's saved up, he heads out to purchase a plot of land in the remote, unexplored wilderness, with the intent of forging his perfect new life. Little does he know, this expanse is infamous as the 'Demonic Realm,' a treacherous territory brimming with savage plants and creatures! But navigating the daily trials of this life-threatening wilderness may prove be a challenge. In his journey of growth, an array of inhabitants, each driven by their motives, decide to follow him, bringing vibrancy back into his life. However, unseen powers resolute in preventing the Demonic Realm from being conquered begin to surface... Will he be able to endure, triumph, and make this land his new home?

This is the story of a young slave gladiator in an underground arena. He doesn't know about his past or how he got to where he is, only that his name is Aegir, and that he is strong. One day he kills the boss and escapes the arena, joining a band of mercenaries as a new recruit. During one mission, they encounter the vampire, Lucy, who slaughters the band with her inhuman strength. After learning that Aegir only knows how to kill, Lucy lets him stay at her house, educating and taking care of him. Two years pass, and on the day of Aegir's departure, they both exchange a promise that if Aegir becomes a king and owns the land of Erg forest, he can come and take her as his woman. Making this his life goal, Aegir set out on a journey to become a hero, a king, and found his own kingdom.