noun
incubus; succubus; dream demon
A demon that appears in dreams, often with sexual connotations. Covers both male (incubus) and female (succubus) forms. Compare with 夢魔 (むま), which can also refer to sleep paralysis.
See also: 夢魔 (むま)
淫魔は夢の中で人を襲うとされる。
An incubus/succubus is said to attack people in their dreams.
その物語には淫魔が登場する
An incubus/succubus appears in that story.