A Valiant Life - Chapter 6: The Power Of The encyclopedia

Xue Xi is forced to fall in love at first sight with this dangerous man on their first meeting. With death being the only other option, she makes the first move:

My daughters started regressing out of nowhere, stirring up a storm because they missed their mother.…But I haven’t even married yet, let alone have any daughters!?

“My turn, draw cards”

“It’s better to use this one if you’re fighting”

Looking at the card in his hand, Yue Si gave a villainous smile.

- Description from novelbuddy

Satou Shiki a Japan present-day university student suddenly one day he got attacked by a slasher when he open his eyes he was already transferred to another world’s labyrinth city. In that another world he who was awakened to do a lot of “things”.