One Piece: The Strongest Swordsman - Chapter 81 - 80: Garden?

The former Immortal Ascension Realm Cultivator Wang Che failed to overcome the Heavenly Tribulation, and as a result, his soul transmigrated to a world of the Martial Soul where soul beasts and humans lived together peacefully.

Huang Dan’s pain nerve is innately different from the ordinary people. A little tore in his skin can cause him to sweat all over his body painfully to the point of him unable to make a word out.

Somehow, he began to cross world, following Mr. System to do the tasks…

In the first world, Huang Dan realizes what it means to die painfully and to live to die again.

TL’s summary:
MC suddenly transmigrated and is bind to a system, requiring him to solve mysteries. Born with a higher degree of pain sensitivity, he met different people in the different worlds and learns what kind of emotion smiling is.

- Description from Novelupdates

Fate, a gatekeeper who had been working for the castle, is beset by a few burdens.

[sweet, pampering][strong FL, 1v1]He was an absolute noble, decisive and cold-hearted, yet he was persistently entwined with her, doting incessantly.The first time they met, he questioned, “Six years ago, was it you?”The second time they met, he was holding a paternity test, “You still dare to say your son isn't mine?”The nth time they met, she finally lost her patience, “Sir, will you ever give it a rest?”The man lifted the corners of his mouth, smiling with a deep and enchanting charm, “Not before our second child is born.”