A Hentai System in the World of Danmachi - Chapter 172 - 171 - Ais is annoyed!

The handsome Emperor falls in love with a Knightess! Knightess Poliana loses to the Acreian Army and despite her struggles to survive in a male infested military, she is now about to die. But then, the young king of Acreia sees her efforts and tells her: "I have a dream, I wish to conquer the world and become an Emperor, would you like to join me?"

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

Ke Mingye accidentally gained the ability to read identities and soon discovered that his family members were an extremely complex mix. Seemingly ordinary family members each had their own secret identities: —— “Superheroes,” “magical girls,” “ninjas,” “aliens,” “vampires,” “employee of Anomaly Control Bureau ,” “dragonkin,” “diviners”... Day and night, each family member tried their best to keep their secret identity hidden, so they made their days extraordinarily mysterious, behaving as normal as possible in front of anyone. But the identities they desperately concealed were nothing more than a string of data on the player panel to Ke Mingye. Just when Ke Mingye was lamenting that there wasn’t a single normal person in his family, he received a main quest from the game system... —— “Eradicate the Superhumans.” “Eradicate... the superhumans?” Sitting at the dining table, Ke Mingye was stunned for a long time, with his chopsticks in his mouth, as he turned his head to survey the room full of superhumans and thought to himself that this was pretty a “happy” surprise！XD

Darkness. The ultimate ruler, the true One-Above-All. Everything starts from it, and everything returns to it eventually. People say that in your final moments, darkness seeps in your very existence, engulfs your whole being. They say it’s an incredibly relaxing feeling that takes you on your journey to your afterlife. They say that in the very darkness, the ‘nothingness’ your weary soul will finally be able to rest and relax. This brings up some very philosophical and existential questions. Do you even exist?

Follow the epic journey of Aiden, the last primal, a unique and ancient race as he finds his place in a strange, new world, filled with threats and violence.