Zettai ni Yurusanai... Fukushuu Tenchou no Kichiku Gachi Seisai!

Disguised as a masseuse, he gets his sexy revenge! Soaking wet from an aphrodisiac, she's made to savor an endless hell…
(Source: Coolmic)
Note: Simultaneously released in long-strip and traditional formats, with 18 episodes and 6 chapters respectively.