Sangatsu Yuyaru

Koron, who just loves his master to bits, spends his days thinking how he can make her happy. Then, one night, Koron witnesses his master masturbating to videos... Upon seeing her blissful cumface, he comes to the conclusion that if he does the same thing in the videos to his master, she will be pleased... and puts his plan into motion! While she is aware they should not be doing it, Koron's master is unable to resist his advances, and she relinquishes her body to the pleasure...