Toaru Kagaku no Railgun SS - Volume 1, Chapter 7

In this world, there are people living in misery, they die full of resentment and the end of their despair, they beg the devil, even at the cost of their souls, to witness the one they hate descend to hell.

This is commonly called, “making a deal with the devil.”

In the new age and new life, the newly born little incubus, You Ning, started his first deal as a devil immediately after graduation.

But what’s up with this archangel that’s chasing after him?

#Don’t fall in love with me; I’m an incubus. I don’t have feelings.#

The beautiful little incubus X the handsome, domineering, and scheming archangel.

- Description from Novelupdates

On his usual way to home Mikado Tsuchio fell into a hole that suddenly opened on the ground. Just like that, Tsuchio falls in a different world, he lands on a Grappler Wyvern and manages to tame it.

Tsuchio decides just like that to live in the other world, the reason for his quick decision: he wants to make a monster girl harem.

“Ah…” She is so tickled that she is defenseless against his attacks. “You can choose to marry me or to die!” By then you will become the first person in history to die from tickling. “If you dare to reject me, I will make sure to ravish you until you yield to me.”

Wang Xuan entered Longmao Square and was trapped in it. When he finally left, it turned out…

This is the last building on earth.

- Description from novelbuddy