Ken'ichi and several of his friends gather at their school during summer vacation to look at a new archaeological find, a bizarre looking mirror. Suddenly, the entire building is transported to an alternate dimension and a magic field surrounds it to prevent them from escaping. Also, their minds have switched to other people's bodies. They now must find a way to return everything back to normal until the dimension falls apart. [Edited from ANN]
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| Name | Characters | Importance | Weight |
|---|---|---|---|
| Body Swap Engages in | 5 | 2.86 | 5.12 |
| Genderbent Sex Engages in (Sexual) | 4 | 3.10 | 4.99 |
| School Music Club Member Role | 4 | 2.86 | 4.61 |
| Confinement Subject of | 10 | 1.76 | 4.22 |
| Insanity Subject of | 3 | 2.22 | 3.08 |
| Guitarist Role | 2 | 2.78 | 3.05 |
| Sexual Corruption Subject of | 3 | 1.97 | 2.73 |
| Eleventh Grader Role | 3 | 1.90 | 2.64 |
| Sex in Public Places Engages in (Sexual) | 6 | 1.26 | 2.46 |
| French Kiss Engages in (Sexual) | 4 | 1.52 | 2.45 |
| Tenth Grader Role | 2 | 2.21 | 2.43 |
| Tribadism Engages in (Sexual) | 2 | 2.12 | 2.33 |
| Archeologist Role | 1 | 3.32 | 2.30 |
| Twelfth Grader Role | 2 | 2.06 | 2.27 |
| Sex on Toilet Engages in (Sexual) | 2 | 2.06 | 2.27 |
| Lesbian Sex Engages in (Sexual) | 4 | 1.38 | 2.23 |
| Masturbation Engages in (Sexual) | 4 | 1.37 | 2.21 |
| Flute Items | 1 | 3.17 | 2.20 |
| Ninth Grader Role | 1 | 3.16 | 2.19 |
| Outdoor Sex Engages in (Sexual) | 5 | 1.16 | 2.07 |
| Ane Act Role | 1 | 2.80 | 1.94 |
| Coach Role | 1 | 2.74 | 1.90 |
| Reserved Personality | 2 | 1.73 | 1.90 |
| Cowgirl Engages in (Sexual) | 2 | 1.72 | 1.89 |
| Carefree Personality | 2 | 1.67 | 1.84 |
| Sweater Clothes | 2 | 1.64 | 1.80 |
| Childhood Friend Role | 3 | 1.25 | 1.73 |
| Full Sister Role | 2 | 1.57 | 1.73 |
| Cunnilingus Engages in (Sexual) | 2 | 1.56 | 1.72 |
| Masturbation with Object Engages in (Sexual) | 1 | 2.44 | 1.69 |
| Blowjob Subject of (Sexual) | 2 | 1.53 | 1.68 |
| Group Sex of One Male and Several Females Engages in (Sexual) | 3 | 1.19 | 1.65 |
| Virgin Sex Engages in (Sexual) | 6 | 0.84 | 1.64 |
| Twin Blowjob Subject of (Sexual) | 1 | 2.33 | 1.62 |
| School Uniform Clothes | 8 | 0.74 | 1.62 |
| Half-Japanese Role | 1 | 2.32 | 1.61 |
| Pissing Engages in (Sexual) | 2 | 1.46 | 1.60 |
| Mirror Sex Engages in (Sexual) | 1 | 2.30 | 1.59 |
| Twin Blowjob Engages in (Sexual) | 2 | 1.44 | 1.58 |
| Pre-Story Death Subject of | 1 | 2.28 | 1.58 |
| Blowjob Engages in (Sexual) | 7 | 0.76 | 1.58 |
| Loner Personality | 1 | 2.26 | 1.57 |
| Swimsuit Clothes | 1 | 2.25 | 1.56 |
| Hair Tie Clothes | 2 | 1.41 | 1.55 |
| Bookworm Personality | 1 | 2.18 | 1.51 |
| Claret Hair | 1 | 2.15 | 1.49 |
| Book Items | 1 | 2.13 | 1.47 |
| Tiny Braid Hair | 1 | 2.07 | 1.43 |
| Reading Engages in | 1 | 2.05 | 1.42 |
| Cyan Hair | 1 | 2.02 | 1.40 |
| Sixty-nine Engages in (Sexual) | 2 | 1.25 | 1.38 |
| Erotic Spanking Subject of (Sexual) | 1 | 1.96 | 1.36 |
| Ojousama Role | 1 | 1.96 | 1.36 |
| Teen Body | 8 | 0.61 | 1.35 |
| Friend Role | 2 | 1.21 | 1.33 |
| Antenna Hair | 1 | 1.92 | 1.33 |
| Red Eyes | 2 | 1.19 | 1.31 |
| Standing Sex Engages in (Sexual) | 1 | 1.88 | 1.31 |
| Boobjob Subject of (Sexual) | 1 | 1.87 | 1.30 |
| Timid Personality | 1 | 1.87 | 1.30 |
| Standing Sex Subject of (Sexual) | 2 | 1.18 | 1.29 |
| Cunnilingus Subject of (Sexual) | 2 | 1.17 | 1.29 |
| Twin Braids Hair | 1 | 1.85 | 1.29 |
| Sexual Blindfold Subject of (Sexual) | 1 | 1.85 | 1.28 |
| Homosexual Role | 1 | 1.84 | 1.27 |
| Avoidable Death (obsolete) Subject of | 1 | 1.83 | 1.27 |
| Rape Engages in (Sexual) | 1 | 1.81 | 1.26 |
| Boku Personality | 1 | 1.79 | 1.24 |
| Hair Ribbon Clothes | 1 | 1.77 | 1.23 |
| Deredere Personality | 1 | 1.75 | 1.21 |
| Pajamas Clothes | 1 | 1.75 | 1.21 |
| Ponytail Hair | 2 | 1.10 | 1.20 |
| Glasses Clothes | 2 | 1.08 | 1.19 |
| Naive Personality | 1 | 1.71 | 1.18 |
| Coat Clothes | 1 | 1.70 | 1.18 |
| Arrogant Personality | 1 | 1.70 | 1.18 |
| Stoic Personality | 1 | 1.70 | 1.18 |
| Spiky Hair | 1 | 1.69 | 1.17 |
| Thigh-high Stockings Clothes | 2 | 1.03 | 1.14 |
| Shy Personality | 1 | 1.62 | 1.12 |
| Green Eyes | 2 | 1.01 | 1.11 |
| Death Subject of | 1 | 1.60 | 1.11 |
| Ore Personality | 1 | 1.59 | 1.10 |
| Older Sister Role | 1 | 1.55 | 1.08 |
| Teacher Role | 1 | 1.55 | 1.07 |
| Energetic Personality | 1 | 1.53 | 1.06 |
| Doggy Style Subject of (Sexual) | 2 | 0.92 | 1.01 |
| Not a Virgin Role | 1 | 1.45 | 1.00 |
| Younger Sister Role | 1 | 1.44 | 1.00 |
| Headband Clothes | 1 | 1.44 | 1.00 |
| Brown Eyes | 2 | 0.90 | 0.99 |
| Bathroom Sex Engages in (Sexual) | 1 | 1.39 | 0.97 |
| Not Sexually Involved Engages in (Sexual) | 1 | 1.36 | 0.94 |
| Brown Hair | 3 | 0.68 | 0.94 |
| Adult Body | 1 | 1.36 | 0.94 |
| Bukkake Subject of (Sexual) | 1 | 1.34 | 0.93 |
| Skirt Clothes | 1 | 1.33 | 0.92 |
| Pink Hair | 1 | 1.32 | 0.92 |
| Red Hair | 1 | 1.32 | 0.92 |
| Curtained Hair | 1 | 1.30 | 0.90 |
| Black Hair | 2 | 0.81 | 0.89 |
| Ribbon Tie Clothes | 1 | 1.24 | 0.86 |
| Friendly Personality | 1 | 1.23 | 0.85 |
| Short Hair | 3 | 0.61 | 0.84 |
| Violet Hair | 1 | 1.19 | 0.82 |
| Twin Tails Hair | 1 | 1.12 | 0.78 |
| Necktie Clothes | 1 | 1.11 | 0.77 |
| Tareme Eyes | 1 | 1.09 | 0.76 |
| Vaginal Fingering Subject of (Sexual) | 1 | 1.08 | 0.75 |
| Parted to Side Hair | 1 | 1.07 | 0.74 |
| Violet Eyes | 1 | 1.04 | 0.72 |
| Spiky Bangs Hair | 1 | 1.01 | 0.70 |
| Cowgirl Subject of (Sexual) | 1 | 0.95 | 0.66 |
| Blond Hair | 1 | 0.88 | 0.61 |
| Waist Length+ Hair | 1 | 0.80 | 0.55 |
| Blue Eyes | 1 | 0.80 | 0.55 |
| Young-adult Body | 1 | 0.77 | 0.53 |
| Long Hair | 1 | 0.75 | 0.52 |
| Pale Body | 1 | 0.37 | 0.26 |