After being sent by Alaya and Gaia, counter guardian Shirou Emiya finds himself in the superhero world of the Avengers. Is Loki's plan the threat he is supposed to fight, or is it something much worse.

Y/N his the owner of a multi million dollar corporation who has his own views on the world. And he's not alone.

When a man dies protecting a child from danger, he is rewarded with a second chance at life, a Gamers life.

It's believed that Lucifer was the strongest Devil to exist. But he wasn't, nor was he the first. There was another being, he was born a Devil. He is the True King of Hell, Satan. Satan had a Heir but she left and fell in love with a Fallen Angel. Their actions gave birth to Y/N, Satan's grandson and Heir.

Y/N was the younger brother of Chifuyu but was older then Ichika. It started out small but after a while they forgot him.

Y/N L/N, Aged 18 years old. Accidentally set off an IS during an examination, with his friend, Ichika Orimura. Shocked the world, when two boys entered a female world. What Y/N and Ichika didn't expect was that they were thrown into the mix of fighting off girls, meeting a childhood friend, and meeting a mysterious woman. Read on to find out the ripple they cause when they enter a female world. Can they handle the pressure or will they break before they make big? Catch Y/N in another universe facing love, action, and building his very own harem. --- Rated for M. There will be violence and mature language.