Blessed to be the Villain - Chapter 3: Madness (R-18 Major)

[Forced Possession Summoning]A technique to forcibly summon a person from another world and defeat a monster sealed within them. It is a forbidden large-scale magic that mankind has devised to defeat an otherwise undefeatable dragon.

Yukihisa Kogure, a black company worker, was summoned to another world with this [Forced Possession Summoning] magic on one day overnight. The dragon, Veno Yveval, was sealed within Yukihisa’s body.

『To subjugate a powerful dragon by using the life of a person from another world? They will come at us with everything they have. Won’t you cooperate with me to survive?』

「Isn’t that an offer I cannot refuse? I do not wish to die.」

Thus, the escape of Yukihisa and the dragon, Veno, began.

An otherworld fugitive drama depicted by extraordinary storyteller Aneko Yusagi, unfolds!

She, has always refused to let go of her childhood pride.Initially, he forced her into submission in the harshest way possible, which made her despise him to the bone.At twenty, she abandoned her husband, followed a man she thought was worthy of her, only to end up being violently mistreated.Yet, it was he who raised her from the rain when she was at her most helpless moment.Fate brought her back to her eighteenth year, for a do-over. She emerged from her cocoon, when hate was replaced by regret, she shed her thorny exterior, but does she still have the right to pursue happiness?But why does he always remind her in the coldest voice, “He Zhilan, I don't want the He Family to raise an ungrateful wretch.”Or menacingly warn her, “He Zhilan, don't force me to take away your freedom!”

A decade ago, the first dungeon gates appeared, but some vanished before they were ever conquered. The MC, a low-rank hunter, awakens the Lost Gate System, granting him access to these forgotten dungeons where legendary monsters and artifacts are trapped. Each completed lost gate grants him absurd power, but also reveals terrifying truths—these dungeons are prisons for ancient beings who want revenge.

Civilization is destroyed and records lost. Only Dudian survives in a cryogenic sleep. Three hundred years later, Dudian wakes up and must become Dean to survive. Who can he trust in this world overrun by monsters without and within?

- Description from Novelupdates