Otto Igai ni Ikasareta Hi.: Zenshin ga Seikantai ni Kawaru Mekakushi Oil Massage

My husband can't turn me on... So when my brother-in-law gives me a deep massage, I relax and then... I'm already cumming...!!?
(Source: Coolmic)
Note: Simultaneously released in long-strip and traditional formats, with 27 episodes and 9 chapters respectively.