noun
iyamisu; unsettling mystery subgenre
A subgenre of mystery fiction that aims to leave the reader feeling disturbed or unsettled, often through psychological tension or an uncomfortable resolution. The term blends イヤ (unpleasant) and ミステリー (mystery).
See also: イヤ
最近、イヤミスと呼ばれる小説が人気を集めている。
Recently, novels called iyamisu have been gaining popularity.
あの作家のイヤミス作品は、読んだ後に何とも言えない気持ちになる。
That author's iyamisu works leave you with an indescribable feeling after reading.