noun
little emperor; spoilt only child
Refers to a pampered only child, originally in the context of China's one-child policy, but now used more broadly for any overindulged child.
一人っ子政策の結果、中国では「小皇帝」と呼ばれる子供たちが増えた。
As a result of the one-child policy, the number of children called 'little emperors' increased in China.
あの子は祖父母に甘やかされて、まるで小皇帝だ。
That child is spoiled by his grandparents and acts like a little emperor.