MTL - From the Dungeon, Slaughter the Demon Apostle - Chapter 636 "stop!"

Takebayashi Ryouma, a 39 years old man with hidden past, found himself in a strange white room. The gods tell him that he has died and that they are sending his soul to a different world, a world where magic exists. After living alone for 3 years, his gamer soul loses its common sense and starts along crazy routes.

Chang Xia is an anomaly in the tribe——

She doesn’t dress up, make friends, or play around. She likes to hoard all kinds of wild vegetables, and she doesn’t eat meat, saying it’s unpalatable. The whole tribe was worried that she would not grow up and die.

When she became an adult, she directly picked up a sick seedling and married her.

later.

Chang Xia used the hoarded wild vegetables to farm and feed the entire tribe; she built houses and roads, so that the tribe would no longer suffer from cold and freezing; she also conquered the entire ancient continent with delicious food.

Finally, the clansman knew that the sickly seedling beside Chang Xia was once the most powerful totem warrior of the tribe. At this time, the clansmen understood that Chang Xia was the most powerful.

- Description from novelbuddy

This is a story about a legend, of one that can never be forgotten.
Summer, first time down the mountains in 16 years, after being raised by his 3 masters and Fairy sister.

‘Why won’t you follow the Rules of society?’ The rules are the tool made by the strong, so I follow my own rules.

‘Why won’t you just use your brain instead of your brawn?’ Idiot! Have you ever seen anyone use their brain, to get back at an ant that bites them!? No, they just casually step on it.

‘Oh, everyone says you’re a first-class beauty huh?’ well, I’m sorry but even you are not qualified to be my wife. Only a ‘Summer class beauty’ is worthy enough!

‘My enemy is sick?’ Oh, don’t worry, even if you’re on your last breath and I feel it’s beneath me to slap shot you dead. I’ll just fix you up and then beat you!

‘Who am I?’

“I am Summer in the spring, the autumn, and the winter, I’m the world’s first above the heavens!”

Follow me, Summer Day as I step by step become known as the world’s first master, the world’s first doctor, the world’s richest man…… a lot of other world’s number one, but most importantly, The worlds happiest man.

- Description from Novelupdates

Crossing to One Piece world, he became Roger’s younger brother.