Counterattack System appeared when I'm already At The Mahayana Realm - Chapter 542 - 543:

MILF Hunting In Another World Novel –After being caught while having an intimate encounter with other MILFS, MC escaped to another world. Sharing a bed with a top-class MILF with an amazing body?! Bon Appetite~! Will MC be able to make his own harem in this world safely?This is edited work of same webtoon “MILF Hunting In Another World”. Not my work.. Author isERO404. He has separate manga which you can visit.It's translated using software and I haven't done proofreading. So, grammar is pretty bad.

The king of assassins was reborn, mastering both alchemy and poison. Sitting inside the space, there was a ghost that loved crying.

In the world of demons and demons, a hundred ghosts travel at night.Qin Feng, who accidentally crossed over, came to this troubled world with no lofty ambitions.He only wanted to protect himself and enjoy the rest of his life safely.But the sky does not fulfill people’s wishes, excellent men are so outstanding everywhere.The ancestor made a marriage contract, and the talented young lady of the Liu family became a wife.

Sherlock is a new generation Dungeon Lord whose ambition is to become the greatest Devil King and building up the greatest Dungeon in the Underworld.

He summons a group of other-worldly goblins who give themselves strange names, form cliques, engage in commerce, and even fight among themselves.

They call themselves—Gamers!

- Description from Novelupdates