The main character, Yuuichi, is a boy who loves his stepmother, Misako. However, it was a typical mother-son relationship until he learned about the "Mama Club". A secret club at the school that matches boys interested in sex with mothers with incestuous desires. Together, they seek out and enjoy pseudo-incest, that is "mama club"... Yuuichi accidentally discovers this secret is blackmailed into becoming a member and pressured into having sex with the mothers. Unable to resist the pleasure, he spends his days having sex with an unspecified number of "mama's". This causes a change in Yuuichi's love for his mother, Misako. What he truly seeks while drowning in pleasure is his stepmother. On the other hand, what are Misako's feelings for Yuuichi...? [From official site]
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| Name | Score | Importance | Weight |
|---|---|---|---|
| Protagonist's Non-blood-related Mother as a Heroine | 3.00 | 2.17 | 6.50 |
| Non-blood-related Mother/Son Incest | 2.50 | 2.22 | 5.54 |
| Mother Support Character | 3.00 | 1.78 | 5.34 |
| Shota Protagonist | 2.50 | 1.85 | 4.63 |
| Straight Shotacon | 2.50 | 1.82 | 4.55 |
| Pragmatic Heroine | 2.00 | 2.25 | 4.51 |
| School Nurse Heroine | 2.00 | 2.23 | 4.45 |
| Child Protagonist | 2.00 | 2.17 | 4.34 |
| Short Sexual Scenes | 2.00 | 1.83 | 3.65 |
| Only Non-Virgin Heroines | 2.00 | 1.79 | 3.58 |
| Promiscuous Heroine | 2.00 | 1.76 | 3.51 |
| Adult Heroine | 3.00 | 1.14 | 3.41 |
| School | 2.00 | 1.51 | 3.02 |
| Group Sex of Multiple Females and Males | 2.00 | 1.49 | 2.98 |
| Group Sex of One Female and Several Males | 2.00 | 1.08 | 2.15 |
| Heroine with Big Breasts | 2.00 | 0.85 | 1.71 |
| Nukige | 2.50 | 0.65 | 1.63 |
| Netorare | 1.00 | 1.51 | 1.51 |
| Multiple Endings | 2.00 | 0.67 | 1.34 |
| Sexual Content | 2.00 | 0.63 | 1.26 |
| Group Sex | 0.33 | 2.62 | 0.86 |
| ADV | 2.00 | 0.15 | 0.29 |
| Name | Characters | Importance | Weight |
|---|---|---|---|
| Incest Roleplay Engages in (Sexual) | 7 | 3.28 | 6.83 |
| Sex with Children Engages in (Sexual) | 7 | 2.49 | 5.18 |
| Crotchless One Piece Swimsuit Clothes | 3 | 3.70 | 5.13 |
| Housewife Role | 6 | 2.30 | 4.48 |
| Sex in School Infirmary Engages in (Sexual) | 6 | 2.23 | 4.33 |
| Promiscuous Personality | 6 | 2.20 | 4.28 |
| Not an Anal Virgin Role | 3 | 2.88 | 3.99 |
| Consensual Group Sex of One Female and Several Males Engages in (Sexual) | 4 | 2.48 | 3.99 |
| Blackmail Engages in | 5 | 2.22 | 3.98 |
| Voyeurism Subject of | 6 | 1.96 | 3.82 |
| Sexual Roleplay Engages in (Sexual) | 3 | 2.70 | 3.75 |
| Tracksuit Clothes | 4 | 2.32 | 3.74 |
| Group Sex of Multiple Females and Males Engages in (Sexual) | 6 | 1.91 | 3.72 |
| Lotion Play Engages in (Sexual) | 3 | 2.68 | 3.71 |
| Infidelity Engages in | 6 | 1.80 | 3.49 |
| Not a Virgin Role | 7 | 1.42 | 2.96 |
| Sex in Classroom Engages in (Sexual) | 5 | 1.61 | 2.88 |
| Mother Role | 6 | 1.46 | 2.84 |
| Adult Body | 7 | 1.35 | 2.80 |
| Pubic Hair Hair | 7 | 1.34 | 2.78 |
| Anilingus Engages in (Sexual) | 3 | 2.01 | 2.78 |
| Ass to Mouth Engages in (Sexual) | 1 | 3.92 | 2.72 |
| Sex in Front of an Audience Engages in (Sexual) | 5 | 1.50 | 2.69 |
| Double Handjob Engages in (Sexual) | 3 | 1.89 | 2.62 |
| Breast Smothering Subject of (Sexual) | 1 | 3.70 | 2.56 |
| Son Complex Personality | 1 | 3.63 | 2.52 |
| Balls Sucking Engages in (Sexual) | 2 | 2.26 | 2.48 |
| Observant Personality | 2 | 2.24 | 2.47 |
| Sexual Cosplay Engages in (Sexual) | 2 | 2.24 | 2.46 |
| Sex in Public Places Engages in (Sexual) | 6 | 1.26 | 2.45 |
| Sexual Fantasy Subject of (Sexual) | 2 | 2.22 | 2.44 |
| Guilt Subject of | 2 | 2.20 | 2.42 |
| Ass to Mouth Subject of (Sexual) | 1 | 3.44 | 2.39 |
| Health Committee Member Role | 1 | 3.43 | 2.38 |
| Big Breasts Body | 7 | 1.14 | 2.37 |
| Non-blood-related Incest Engages in (Sexual) | 2 | 2.16 | 2.37 |
| Therapist Role | 1 | 3.40 | 2.35 |
| Black Eyes | 4 | 1.42 | 2.29 |
| Outdoor Sex Engages in (Sexual) | 6 | 1.16 | 2.25 |
| Rimming Handjob Subject of (Sexual) | 1 | 3.24 | 2.24 |
| Nipple Sucking Subject of (Sexual) | 4 | 1.38 | 2.23 |
| Vaginal Object Insertion Subject of (Sexual) | 2 | 2.01 | 2.21 |
| Vaginal Gaping Engages in (Sexual) | 2 | 1.95 | 2.14 |
| Makeup Body | 3 | 1.54 | 2.13 |
| Group Sex of One Male and Several Females Engages in (Sexual) | 5 | 1.17 | 2.11 |
| Naked Apron Clothes | 2 | 1.87 | 2.06 |
| Missionary Subject of (Sexual) | 5 | 1.12 | 2.00 |
| Lab Coat Clothes | 2 | 1.80 | 1.97 |
| Rimming Handjob Engages in (Sexual) | 1 | 2.81 | 1.95 |
| Bun Hair | 2 | 1.77 | 1.95 |
| Spit-roast Subject of (Sexual) | 2 | 1.75 | 1.92 |
| Off-The-Shoulder Sweater Clothes | 1 | 2.72 | 1.88 |
| Nipple Sucking Engages in (Sexual) | 2 | 1.70 | 1.87 |
| Balls Sucking Subject of (Sexual) | 1 | 2.68 | 1.85 |
| Skirt Clothes | 3 | 1.33 | 1.85 |
| Seduction Subject of | 1 | 2.67 | 1.85 |
| Breast Smothering Engages in (Sexual) | 1 | 2.64 | 1.83 |
| Pessimist Personality | 1 | 2.60 | 1.80 |
| Elementary School Student Role | 1 | 2.52 | 1.74 |
| Non-blood-related Son Role | 1 | 2.49 | 1.72 |
| Sex in Water Engages in (Sexual) | 2 | 1.56 | 1.72 |
| Penile Masturbation Engages in (Sexual) | 1 | 2.47 | 1.71 |
| School Nurse Role | 1 | 2.47 | 1.71 |
| Consumption of Porn Engages in (Sexual) | 1 | 2.46 | 1.71 |
| Spit-roast Engages in (Sexual) | 1 | 2.45 | 1.69 |
| Dildo Subject of (Sexual) | 1 | 2.38 | 1.65 |
| Anal Sex Subject of (Sexual) | 3 | 1.19 | 1.65 |
| Non-blood-related Mother Role | 1 | 2.37 | 1.65 |
| Anal Gaping Engages in (Sexual) | 1 | 2.37 | 1.64 |
| Reverse Missionary Engages in (Sexual) | 1 | 2.36 | 1.63 |
| French Kiss Engages in (Sexual) | 2 | 1.49 | 1.63 |
| Blouse Clothes | 2 | 1.47 | 1.61 |
| Sexual Fantasy Engages in (Sexual) | 1 | 2.32 | 1.61 |
| Twin Blowjob Subject of (Sexual) | 1 | 2.32 | 1.61 |
| Twin Blowjob Engages in (Sexual) | 2 | 1.45 | 1.59 |
| Name Tag Clothes | 1 | 2.27 | 1.57 |
| Masturbation Engages in (Sexual) | 2 | 1.39 | 1.53 |
| Pragmatic Personality | 1 | 2.20 | 1.52 |
| Seduction Engages in | 1 | 2.18 | 1.51 |
| Quickie Fix Subject of (Sexual) | 3 | 1.08 | 1.50 |
| Nurse Role | 1 | 2.16 | 1.50 |
| Doggy Style Subject of (Sexual) | 4 | 0.93 | 1.49 |
| Voyeurism Engages in (Sexual) | 1 | 2.14 | 1.49 |
| Blowjob Engages in (Sexual) | 6 | 0.76 | 1.48 |
| Bukkake Subject of (Sexual) | 2 | 1.35 | 1.48 |
| Itome Eyes | 1 | 2.13 | 1.47 |
| Blackmail Subject of | 1 | 2.12 | 1.47 |
| Nurse's Cap Clothes | 1 | 2.09 | 1.45 |
| Lonely Role | 1 | 2.05 | 1.42 |
| Anilingus Subject of (Sexual) | 1 | 2.05 | 1.42 |
| Bow Tie Clothes | 1 | 2.04 | 1.42 |
| Butterfly Engages in (Sexual) | 1 | 2.02 | 1.40 |
| Nurse Uniform Clothes | 1 | 2.00 | 1.39 |
| Parted in Middle Hair | 2 | 1.25 | 1.38 |
| Vibrator Subject of (Sexual) | 1 | 1.98 | 1.37 |
| Quickie Fix Engages in (Sexual) | 1 | 1.88 | 1.31 |
| Black Hair | 4 | 0.81 | 1.30 |
| Standing Sex Engages in (Sexual) | 1 | 1.87 | 1.30 |
| Standing Sex Subject of (Sexual) | 2 | 1.18 | 1.29 |
| Timid Personality | 1 | 1.86 | 1.29 |
| Boobjob Subject of (Sexual) | 1 | 1.86 | 1.29 |
| Butterfly Subject of (Sexual) | 2 | 1.17 | 1.29 |
| Blunt Personality | 1 | 1.84 | 1.27 |
| Handjob Engages in (Sexual) | 2 | 1.16 | 1.27 |
| Brown Eyes | 3 | 0.90 | 1.25 |
| Short Shorts Clothes | 1 | 1.77 | 1.23 |
| Anal Sex Engages in (Sexual) | 1 | 1.76 | 1.22 |
| Handjob Subject of (Sexual) | 1 | 1.75 | 1.22 |
| Deredere Personality | 1 | 1.74 | 1.21 |
| Missionary Engages in (Sexual) | 1 | 1.74 | 1.21 |
| Reverse Missionary Subject of (Sexual) | 1 | 1.73 | 1.20 |
| Sports Shoes Clothes | 1 | 1.72 | 1.20 |
| Cowgirl Engages in (Sexual) | 1 | 1.72 | 1.19 |
| Confident Personality | 1 | 1.70 | 1.18 |
| Vaginal Masturbation Engages in (Sexual) | 1 | 1.70 | 1.18 |
| Naive Personality | 1 | 1.69 | 1.17 |
| Loyal Personality | 1 | 1.69 | 1.17 |
| Doggy Style Engages in (Sexual) | 1 | 1.69 | 1.17 |
| Sex with Protagonist Only Engages in (Sexual) | 1 | 1.68 | 1.16 |
| Carefree Personality | 1 | 1.68 | 1.16 |
| No Bangs Hair | 1 | 1.66 | 1.15 |
| Sweater Clothes | 1 | 1.64 | 1.14 |
| Reverse Cowgirl Subject of (Sexual) | 1 | 1.63 | 1.13 |
| Kind Personality | 2 | 1.03 | 1.13 |
| Mole Body | 1 | 1.59 | 1.10 |
| Brown Hair | 4 | 0.68 | 1.10 |
| Spiky Bangs Hair | 2 | 1.00 | 1.10 |
| Cunnilingus Engages in (Sexual) | 1 | 1.55 | 1.08 |
| Blowjob Subject of (Sexual) | 1 | 1.52 | 1.06 |
| Cowgirl Subject of (Sexual) | 2 | 0.95 | 1.05 |
| Straight Hair | 2 | 0.95 | 1.04 |
| Shoulder-length Hair | 2 | 0.92 | 1.01 |
| Headband Clothes | 1 | 1.45 | 1.00 |
| Hairpin Clothes | 1 | 1.40 | 0.97 |
| Knee-high Socks Clothes | 1 | 1.38 | 0.96 |
| Kid Body | 1 | 1.37 | 0.95 |
| Wavy Hair | 1 | 1.36 | 0.94 |
| Cunnilingus Subject of (Sexual) | 1 | 1.16 | 0.81 |
| Glasses Clothes | 1 | 1.08 | 0.75 |
| Vaginal Fingering Subject of (Sexual) | 1 | 1.08 | 0.75 |
| Boobjob Engages in (Sexual) | 1 | 1.07 | 0.74 |
| Short Hair | 2 | 0.61 | 0.67 |
| Virgin Sex Engages in (Sexual) | 1 | 0.85 | 0.59 |
| Long Hair | 1 | 0.75 | 0.52 |