逆流: flowing in the reverse direction, counter current

逆流: flow in the opposite direction

逆説: paradox / 逆接: contrastive particle (grammar)

逆襲: strike back

逆襲: a counterattack

反逆, 叛逆: treason, treachery

discolored spot or area / disgraceful matter

(informal) excitement

Heaven's net (from which nothing sinful can escape)

(historical) an era that began on 9 November 1681 (twenty-ninth day of the ninth month according to the Japanese calendar) and ended on 5 April 1684 (twenty-first day of the second month)