The Zashiki Warashi of Intellectual Village - Volume 6, Chapter 1: Introduction@Jinnai Shinobu & Yonsesaki Hiro

Mark is a genius military weapon designer who was kidnapped by a mafia gang after refusing to work for them.
They forced him to design unique weapons for five years, until one day he successfully escaped only to get shot by his trusted comrades.
*Ding! You awakened a weapon system.
When he opened his eyes, he was in a different body and in a different world.
"You want to kill a wild boar without being detected? Forget about bow and arrow. Here, I present you this sniper rifle."
"You want to kill a horde of goblins from the sky? Forget about those flying carpets and brooms. Here, I present you the fighter jet."
"You want to kill a dragon? Forget about taking the help of the S-class adventure team. Here, I present you a nuclear bomb."
Join Mark Spencer/ Lu Zhen as he brings the whole world to its knees with the help of his weapon system.
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Note: Author isn't born in an English-speaking nation and has no editor either. So, please be understanding if there are any grammatical errors.
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Kurono Maou is a high school student who is sensitive of his sharp eyes and bad expression. No girlfriend but gifted with friends in his own way, he had been living a peaceful life.

Shao Xian went back in time to when he was ten years old and met his pitiful old enemy. He wanted to personally train him so that when the other grew up, he wouldn’t turn against him.

But he didn’t expect that this old enemy would turn sweet and sticky after being taken care of.

It was just that this little sweet cake was too insecure and often, golden beads of tears would drip.

As soon as he cried, Shao Xian was helpless, and of course, he would want to give him everything.

—

On the way to an auction, Shao Xian died in a car accident.

Before he died, he thought, Fu Baizhou must be very pleased without him being present to mix things up.

After all, in Yan City, Fu Baizhou shocked everyone with a name of being cruel and ruthless.

Only one person dared to confront him.

When he opened his eyes again, he was wearing a custom suit, reexperiencing his tenth birthday.

He saw a dirty little boy being ridden on like a horse. He suddenly remembered the rumors that had been circulating widely in his previous life. It was about the tragic childhood of a ruthless man surnamed Fu.

- Description from Novelupdates

ichiro sakutaa 16 year old High schoolstudent who is so hornythat even the boy's are afraid of him and no one tries to be close with him, and he doesn't get any sex in his world due to some acts of his and verious reasons that we will find out,but one day he gets transmigrated to another world where gender morales are reversed and women's are more sexually aggressiveas soon as he realised this he begins his journey to start hisHarem but he doesn't understand that he is letting his impulsive thoughts to do evil things and becomes a sexual perverted serial killer( his Harem will not accept eachother )( either with one of them or be dead )( rape, piss drinking, scat, loli, pedo, super pedo, femboy, cross-dressing, heavy spitting/saliva drinking fetish, heavy necrophilia sex, cannibalism sex, food sex fetish, incest, forced feminization, penetration, sexual killing, zoophilia, animal sexual abuse )mc is beyond degeneration pure evil