Shitsuji Aibu kissa Part3 - Scene 2
Taken to the dungeon, Ryouhei is in a position to have his ass spanked by the dominant woman. Unable to resist, he takes it, getting his bottom reddened by her. When she turns him over, he's got his hard cock in his hand and she starts sucking it. This leaves him powerless to resist her and he comes in her mouth.