Рьома Такебаяші

The main protagonist who lived an uneventful life as an office worker in Japan before dying in his sleep. Due to his diligent and kind behavior, he earns the grace of the gods who send him to another world as an 8-year-old boy where he lives in a forest for three years while polishing his skills and taming hundreds of slimes, making use of their multiple abilities in various tasks from combat and hunting to cleaning and crafting, until meeting the Jamil family who warmly welcomes him among them. Determined to live independently, he refuses to overindulge on their hospitality and looks for ways to make ends meet by himself.

(Source: Wikipedia)