young owner; young proprietor
Refers to a young person who owns or runs a business, often a family-run shop or inn. Carries a nuance of youth and inexperience, sometimes with a sense of respect or affection.
The young proprietor of that inn is still in his twenties.
Since the young owner took over the shop, the atmosphere has become brighter.
Compound of 若 (young) and 主人 (owner/master). The reading is a straightforward combination of the two words.