Now that's interesting, the first story. two-chapter part, is a non-formulaic netorare, love me some twists.
It starts as a generic blackmail plot where a old fling from the past calls up his former woman to chat, Akira finds out Satomi climbed the social latter by marrying a rich doctor while he remains a small-time club host; he makes small talk by saying he wants to rekindle but she rebukes him, wanting nothing to with him, she didn't marry for money, she actually loves her husband, host then gets mad and threatens her to show videos of their past when she was a more loose girl (the color pages at the beginning), she gives in to his demands; after all said is done Satomi is sitting alone back her house, her worried husband Hajime comes in and asks what's going on, she just says they should get divorced.
A while later Akira comes back for more, at Satomi's home, but turns doctor hubby is very attentive, Hajime was keeping track of his house for whatever signs that made Satomi get that down and suddenly ask for a divorce, after getting all evidence of a man breaking and entering his house and raping his wife, Hajime decides to keep the evidence to himself just in case while he enacts some personal vengeance himself and in a twisted way give Satomi a toy. Hajime now knows of his wife's past so he decides to entrap Akira and present him to her as a toy for a final goodbye, she is surprised at first but gets into her husband's psychotic frenzy pretty fast, she humiliates and has sex with her toy. After some fun Hajime comes to the room with his doctor getup and ready for the procedure, Satomi says she is worried about getting pregnant by Akira so she will take more pills, while Hajime says that's good but he has an even better contraceptive method... vasectomy, a very high cut one, with severe implications that he may cut more than necessary.