MTL - Stone Age Husband Raising Journal - ~ 105|Hibernation

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

As one of the first players to gain access to World of Falan—the first immersive game worldwide—Roland creates his character as a Mage.

However, playing as a Mage is not as fun and easy as he thought. His head even explodes after he casts the very first spell in the game.

Stubbornly sticking to his class when most Mages decide to create a new character, Roland gradually discovers tricks of the trade and his unusual talent. This allows him to change people’s stereotypes on Mages and to explore the deeply-buried secrets of this game…

The undisputed greatest doctor in Korea, Baek Gang Hyuk.

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