Itsuki is invited by his school friends to a summer camp on a tropical island. It's advertised as a place where boys and girls foster communication between the sexes and are taught to mature into men and women. Along with his best friend there's the beautiful girl he has a crush on Shinonome Aoi so he's excited to attend. What Itsuki fails to realize is the camp fosters communication between the sexes by removing everyone's clothing! Everyone is naked all the time and gaining maturity is encouraged through sex! Aoi, her older sister Rio, Itsuki's own younger sister Otoha, and many other girls on the island, Itsuki gets to have sex with them all.
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| Name | Characters | Importance | Weight |
|---|---|---|---|
| Naked in Front of an Audience Clothes | 7 | 2.73 | 5.68 |
| Naked Clothes | 9 | 1.95 | 4.50 |
| Group Sex of Multiple Females and Males Engages in (Sexual) | 9 | 1.91 | 4.40 |
| Group Sex of One Female and Several Males Engages in (Sexual) | 6 | 1.70 | 3.31 |
| Sex in Front of an Audience Engages in (Sexual) | 8 | 1.50 | 3.30 |
| Small Breast Sizes Body | 4 | 1.99 | 3.21 |
| Swinging Engages in | 2 | 2.89 | 3.17 |
| Tribadism Engages in (Sexual) | 3 | 2.12 | 2.94 |
| Kid Body | 7 | 1.37 | 2.84 |
| Sex with Others Engages in (Sexual) | 3 | 1.99 | 2.75 |
| Exhibitionist Role | 2 | 2.42 | 2.66 |
| Standing Sex Engages in (Sexual) | 3 | 1.87 | 2.59 |
| Lesbian Sex Engages in (Sexual) | 5 | 1.38 | 2.47 |
| Incest Engages in (Sexual) | 4 | 1.47 | 2.36 |
| Double-ended Dildo Subject of (Sexual) | 2 | 2.10 | 2.31 |
| Double Penetration (Group Sex) Subject of (Sexual) | 3 | 1.65 | 2.28 |
| Sex in Water Engages in (Sexual) | 3 | 1.56 | 2.17 |
| Cunnilingus Engages in (Sexual) | 3 | 1.55 | 2.15 |
| Group Sex of One Male and Several Females Engages in (Sexual) | 5 | 1.17 | 2.11 |
| Outdoor Sex Engages in (Sexual) | 5 | 1.16 | 2.07 |
| Missionary Subject of (Sexual) | 5 | 1.12 | 2.00 |
| Cowgirl Subject of (Sexual) | 7 | 0.95 | 1.98 |
| Body Food Engages in (Sexual) | 1 | 2.82 | 1.95 |
| Anal Sex Engages in (Sexual) | 2 | 1.76 | 1.94 |
| Missionary Engages in (Sexual) | 2 | 1.74 | 1.91 |
| Standing Sex Subject of (Sexual) | 4 | 1.18 | 1.89 |
| Cowgirl Engages in (Sexual) | 2 | 1.72 | 1.89 |
| Doggy Style Engages in (Sexual) | 2 | 1.69 | 1.85 |
| Shorts Clothes | 2 | 1.68 | 1.84 |
| Shy Personality | 2 | 1.62 | 1.78 |
| Piledriver Engages in (Sexual) | 1 | 2.55 | 1.77 |
| Sixty-nine Engages in (Sexual) | 3 | 1.26 | 1.74 |
| Wake-up Sex Subject of (Sexual) | 1 | 2.48 | 1.72 |
| Masturbation with Object Engages in (Sexual) | 1 | 2.45 | 1.69 |
| Blowbang Engages in (Sexual) | 1 | 2.44 | 1.69 |
| Swim Shorts Clothes | 1 | 2.37 | 1.65 |
| Wake-up Sex Engages in (Sexual) | 1 | 2.36 | 1.64 |
| Cunnilingus Subject of (Sexual) | 3 | 1.16 | 1.61 |
| Lolita Clothes | 1 | 2.26 | 1.57 |
| Black Eyes | 2 | 1.42 | 1.56 |
| Trap Body | 1 | 2.23 | 1.54 |
| Teal Hair | 1 | 2.16 | 1.50 |
| Doggy Style Subject of (Sexual) | 4 | 0.93 | 1.49 |
| Ahoge Hair | 2 | 1.32 | 1.45 |
| T-shirt Clothes | 2 | 1.31 | 1.44 |
| Hazel Eyes | 1 | 2.04 | 1.41 |
| Dress Clothes | 2 | 1.25 | 1.37 |
| Blowjob Engages in (Sexual) | 5 | 0.76 | 1.36 |
| Anal Sex Subject of (Sexual) | 2 | 1.19 | 1.31 |
| Jealous Personality | 1 | 1.88 | 1.30 |
| Boyfriend Role | 1 | 1.87 | 1.29 |
| Short (obsolete) Body | 1 | 1.86 | 1.29 |
| Handjob Engages in (Sexual) | 2 | 1.16 | 1.27 |
| Hair Ribbon Clothes | 1 | 1.79 | 1.24 |
| Spit-roast Subject of (Sexual) | 1 | 1.75 | 1.21 |
| Side Tail Hair | 1 | 1.75 | 1.21 |
| Reverse Missionary Subject of (Sexual) | 1 | 1.73 | 1.20 |
| Teal Eyes | 1 | 1.73 | 1.20 |
| Vaginal/Anal Sexual Toys Subject of (Sexual) | 1 | 1.72 | 1.20 |
| Reserved Personality | 1 | 1.72 | 1.19 |
| Anal Fingering Subject of (Sexual) | 1 | 1.71 | 1.19 |
| Dark Body | 1 | 1.68 | 1.17 |
| Spoons Subject of (Sexual) | 1 | 1.67 | 1.16 |
| Reverse Cowgirl Subject of (Sexual) | 1 | 1.63 | 1.13 |
| Amber Eyes | 2 | 1.03 | 1.13 |
| Vaginal Fingering Engages in (Sexual) | 1 | 1.62 | 1.12 |
| Sex in Classroom Engages in (Sexual) | 1 | 1.61 | 1.11 |
| Spiky Bangs Hair | 2 | 1.00 | 1.10 |
| Bondage Sex Subject of (Sexual) | 1 | 1.57 | 1.09 |
| Short Hair | 5 | 0.61 | 1.09 |
| Full Sister Role | 1 | 1.57 | 1.09 |
| Bracelet Clothes | 1 | 1.56 | 1.08 |
| Older Sister Role | 1 | 1.56 | 1.08 |
| Teacher Role | 1 | 1.55 | 1.08 |
| Blowjob Subject of (Sexual) | 1 | 1.52 | 1.06 |
| Orange Hair | 1 | 1.51 | 1.05 |
| School Uniform Clothes | 3 | 0.75 | 1.04 |
| Teasing Engages in | 1 | 1.45 | 1.00 |
| Younger Sister Role | 1 | 1.44 | 1.00 |
| Hair Tie Clothes | 1 | 1.41 | 0.97 |
| Masturbation Engages in (Sexual) | 1 | 1.39 | 0.96 |
| Knee-high Socks Clothes | 1 | 1.38 | 0.96 |
| Female Ejaculation Engages in (Sexual) | 1 | 1.37 | 0.95 |
| Slim Body | 4 | 0.58 | 0.93 |
| White Hair | 1 | 1.33 | 0.92 |
| Waist Length+ Hair | 2 | 0.81 | 0.89 |
| Black Hair | 2 | 0.81 | 0.88 |
| Ribbon Tie Clothes | 1 | 1.25 | 0.87 |
| Blue Hair | 1 | 1.19 | 0.83 |
| Ribbon Hair Tie Clothes | 1 | 1.19 | 0.83 |
| Twin Tails Hair | 1 | 1.13 | 0.78 |
| Glasses Clothes | 1 | 1.08 | 0.75 |
| Green Eyes | 1 | 1.02 | 0.70 |
| Brown Eyes | 1 | 0.90 | 0.63 |
| Blond Hair | 1 | 0.89 | 0.62 |
| Pale Body | 4 | 0.37 | 0.60 |
| Virgin Sex Engages in (Sexual) | 1 | 0.85 | 0.59 |
| Long Hair | 1 | 0.75 | 0.52 |
| Brown Hair | 1 | 0.68 | 0.47 |
| Teen Body | 1 | 0.62 | 0.43 |