男だん妾しょう

noun

male paramour; kept man; male lover

Refers to a man who is financially supported by a woman in exchange for a romantic or sexual relationship; the male counterpart of a mistress or concubine. Somewhat dated or literary, but still understood.

• 彼かの女じょは若わかい男だん妾しょうを囲かこっているという噂うわさだ。

  There's a rumor that she keeps a young male paramour.