Muke★Chin: Kaa-san no Naka de Honban Tokkun

"I'll only touch it, I promise." My own mother is giving me a hand job in the examination room. When she makes that sexy face of hers, I can't hold back...!!
(Source: Coolmic)
Note: Simultaneously released in long-strip and traditional formats, with 9 episodes and 3 chapters respectively.