Release that Man - Chapter 396 - Master Five

In a certain world, there was someone who excelled in magic combat, people called him 『Sage』. Seeking the strongest combat art, he devoted himself to research every magic and combat arts in existence. And the conclusion he arrived at was very cruel, 『My body is not fit for magic combat』. Yet he didn’t give up. He sealed his own soul with a magic art, and was reborn in a far-off future. And the magic theory in the completely changed world he saw there was of unbelievably low level.

superhuman powers awakened and the world changed, yet Jade remained as he was—the ever so heedless, unbothered, emotionless, and weird guy manning the cash register.But some people deemed him lucky because he seemed to be unaffected by all those happenings. But would they still believe that when Jade came home one day from his night shift, tired and hungry, to find a dungeon gate right inside his house?The worst thing that could ever happen to him was get sucked in that gate, however, instead of the gate, strange Seekers are sucking up to him instead.Jade: Why is this happening?!Seeker 1: Help me go back to my world and I can give you everything you wish for.Seeker 2: I don’t care about going back to that damned world, so can you just let me stay here with you?Seeker 3: Jade, honey, you’re the best Minder! I need you, so come with me to my world.And so on… these Seekers are all lunatics forcing him to help them go back to their respective worlds! But how can Jade do that, when all of them were just mere characters from books?!Now, what will Jade do?

Another entry in what you can call the Proto Harem Series: the books written before the Harem Series that take place in the same world.

It’s about a swordswoman whose student is captured, so she goes to rescue her.

Zhou Yu, a reclusive otaku, who did not like to go out of his house, was one day forced out of his house by a series of unexpected events.

- Description from Novelupdates