Mikami's story has an interesting turn, though I feel like I'm missing some details. Did the wife tell the husband what was going on? How long did the host end up blackmailing the wife? Did she invite him into their home? The wife seemed surprised by the husband's actions, so it's unclear if she knew what he was planning. ANd why is the husband just okay with her fucking another dude? Again, interesting ending - the husband made a deal with Akira, the host, to serve as his wife's toy, and they end up forcing a "temporary" vasectomy upon Akira to prevent any births - but missing enough details for it to feel like an empty conclusion.