Kouichi lives a happy life with his wife, Kanako, and daughter, Nao. But one day, Kimihiko, his neighbor, says to him, "Do you wanna fool around with a married woman?" "What?" What Kimihiko suggests Kouichi is to swap their wives. Kouichi doesn't take it seriously at first, but.... [From ErogeShop]
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| Name | Characters | Importance | Weight |
|---|---|---|---|
| Pole Dancing Engages in | 2 | 3.24 | 3.56 |
| Swinging Engages in | 2 | 2.91 | 3.20 |
| Used Condoms Exposition Engages in (Sexual) | 2 | 2.86 | 3.14 |
| Open Cup Bra Clothes | 2 | 2.39 | 2.62 |
| Condom Sex Engages in (Sexual) | 2 | 2.15 | 2.37 |
| Group Sex of Multiple Females and Males Engages in (Sexual) | 2 | 1.94 | 2.13 |
| Food Gokkun Engages in (Sexual) | 1 | 3.05 | 2.11 |
| Slingshot Micro Bikini Clothes | 1 | 2.96 | 2.05 |
| Huge Breasts Body | 2 | 1.78 | 1.96 |
| Vaginal/Anal Sexual Toys Subject of (Sexual) | 2 | 1.65 | 1.81 |
| Bondage Engages in | 1 | 2.53 | 1.75 |
| Trench Coat Clothes | 1 | 2.46 | 1.70 |
| Baby-doll Clothes | 1 | 2.43 | 1.68 |
| Exhibitionist Role | 1 | 2.43 | 1.68 |
| Polo Shirt Clothes | 1 | 2.31 | 1.60 |
| Gang Bang Subject of (Sexual) | 1 | 2.31 | 1.60 |
| Rope Bondage Harness Clothes | 1 | 2.29 | 1.59 |
| Nipple Teasers Subject of (Sexual) | 1 | 2.25 | 1.56 |
| Blowjob Duck Face Engages in (Sexual) | 1 | 2.23 | 1.54 |
| Body Writing Subject of (Sexual) | 1 | 2.17 | 1.51 |
| Stubble Hair | 1 | 2.16 | 1.50 |
| Vaginal Fingering Subject of (Sexual) | 3 | 1.08 | 1.50 |
| Adult Body | 2 | 1.36 | 1.49 |
| Netorare (they are the stolen SO) Subject of | 1 | 2.14 | 1.49 |
| Bukkake Subject of (Sexual) | 2 | 1.34 | 1.48 |
| Ahegao Engages in (Sexual) | 2 | 1.33 | 1.46 |
| Skirt Clothes | 2 | 1.33 | 1.46 |
| Sunglasses Clothes | 1 | 2.02 | 1.40 |
| Wedding Ring Clothes | 1 | 2.01 | 1.39 |
| Voyeurism Subject of | 1 | 1.99 | 1.38 |
| Piledriver Subject of (Sexual) | 1 | 1.95 | 1.35 |
| Cardigan Clothes | 1 | 1.88 | 1.31 |
| Double Handjob Engages in (Sexual) | 1 | 1.88 | 1.30 |
| Cunnilingus Subject of (Sexual) | 2 | 1.17 | 1.29 |
| Sexual Blindfold Subject of (Sexual) | 1 | 1.85 | 1.28 |
| Pink Rotor Subject of (Sexual) | 1 | 1.83 | 1.27 |
| Outdoor Sex Engages in (Sexual) | 2 | 1.16 | 1.27 |
| Husband Role | 1 | 1.82 | 1.26 |
| Bun Hair | 1 | 1.78 | 1.23 |
| Missionary Subject of (Sexual) | 2 | 1.11 | 1.22 |
| Group Sex of One Female and Several Males Engages in (Sexual) | 1 | 1.72 | 1.19 |
| Quickie Fix Subject of (Sexual) | 2 | 1.08 | 1.18 |
| Coat Clothes | 1 | 1.70 | 1.18 |
| Rope Bondage Subject of (Sexual) | 1 | 1.67 | 1.16 |
| Olive Body | 1 | 1.66 | 1.15 |
| Muscular Body | 1 | 1.65 | 1.14 |
| Reverse Cowgirl Subject of (Sexual) | 1 | 1.64 | 1.14 |
| Nipple Teasing Subject of (Sexual) | 1 | 1.59 | 1.10 |
| Bondage Sex Subject of (Sexual) | 1 | 1.56 | 1.08 |
| Wife Role | 1 | 1.55 | 1.07 |
| Cowgirl Subject of (Sexual) | 2 | 0.95 | 1.05 |
| Necklace Clothes | 1 | 1.50 | 1.04 |
| Big Breast Sizes Body | 1 | 1.47 | 1.02 |
| Daughter Role | 1 | 1.47 | 1.02 |
| Doggy Style Subject of (Sexual) | 2 | 0.92 | 1.01 |
| Seventh Posture Subject of (Sexual) | 1 | 1.45 | 1.01 |
| Brown Eyes | 2 | 0.90 | 0.99 |
| Earrings Clothes | 1 | 1.42 | 0.98 |
| Tominagi Subject of (Sexual) | 1 | 1.36 | 0.94 |
| Pubic Hair Hair | 1 | 1.34 | 0.93 |
| T-shirt Clothes | 1 | 1.32 | 0.91 |
| Black Hair | 2 | 0.81 | 0.89 |
| Sex in Public Places Engages in (Sexual) | 1 | 1.26 | 0.87 |
| Friend Role | 1 | 1.21 | 0.84 |
| Trousers Clothes | 1 | 1.21 | 0.84 |
| Blowjob Engages in (Sexual) | 2 | 0.76 | 0.84 |
| Butterfly Subject of (Sexual) | 1 | 1.17 | 0.81 |
| Handjob Engages in (Sexual) | 1 | 1.16 | 0.80 |
| Slim Body | 3 | 0.57 | 0.79 |
| Twin Tails Hair | 1 | 1.12 | 0.78 |
| Brown Hair | 2 | 0.68 | 0.75 |
| Parted to Side Hair | 1 | 1.07 | 0.74 |
| Boobjob Engages in (Sexual) | 1 | 1.06 | 0.74 |
| Sitting Sex Subject of (Sexual) | 1 | 1.05 | 0.73 |
| Short Hair | 2 | 0.61 | 0.67 |
| Shoulder-length Hair | 1 | 0.91 | 0.63 |
| Virgin Sex Engages in (Sexual) | 1 | 0.84 | 0.58 |
| Blue Eyes | 1 | 0.80 | 0.55 |
| Young-adult Body | 1 | 0.77 | 0.53 |
| Long Hair | 1 | 0.75 | 0.52 |
| Pale Body | 2 | 0.37 | 0.41 |