Taking the Lustful Path: Starting with Sister-in-law - Chapter 18: The Truly Wild Family(Deep +)

Until he became the lowest-ranked master, his lonely and luckless life never changed.Suddenly one day, a descendant injected him with a nanomachine, and the machine started ‘speaking’ to him.[I am the seventh generation Nanomachine manufactured by Sky Cooperation, and I am operating as a central nerve connected to your brain.]“What? What are you talking about?”This was beyond the boy’s knowledge, he turned pale.The Nanomachine linked to his cerebrum realized the User was not understanding a single word it said.“Who are you, and why are you doing this to me?”[“I am the seventh generation Nanomachine.]“Nano Machine?”[Yes, Nanomachine.]The boy’s face hardened.Mashin was the deity the Mashin Religion worshipped, along with the Sacred Fire.The religions’ Master communicated with Mashin.“Um, are you really Mashin?”The boy knelt down and asked with a trembling voice. At this, the Nanomachine attached to his cerebrum realized it had been misunderstood.

Based on the popular Vocaloid series, by HoneyWorks, called “Kokuhoku Yokou Renshuu (Confession Rehearsal)“:

Natsuki, a third-year at Sakuragaoka High School, who holds unrequited feelings for her childhood friend, Yuu, who’s in the Film Club. However, instead of being honest about her feelings, she makes him be her confession “rehearsal” partner. Unable to say her true feelings, things start to get complicated when Miou and Akari, who are also in the Art Club, get involved! Will she ever be able to confess for real!?

As soon as he crossed over, Su Mu came to another world.

In this world, there are warriors, qi refiners, and all kinds of terrifying ghosts and monsters!

A good rebirth simulator turned into a death simulator because it was too dangerous.

For him, death is not the end, but the beginning.

In the simulation again and again, thousands of demons have been derived!

The flesh and blood are put into the pot, divided and eaten, turning into a bloody skeleton.

He died in a wrongful battle, his body did not rot, and he turned into a dry zombie.

Introduce thunder into the body, turn extreme yin into yang, and transform into a fierce reggae.

Devouring demon souls, suffocating the sky, turning into an undead ghost car.

Some people become immortals.

There are also people who die into demons!

- Description from novelbuddy

Harem Dynast is the story of a princess set up in a political marriage with King Lorent, a great conqueror who is often mentioned in the Harem novels.