A curious young man named Kousaka Naoto is studying folklore at university. One day in July, just before a long summer vacation, he receives a letter from his missing mentor. Intrigued by the contents of the letter, Naoto decides to visit the infamous Kamimori village as part of his fieldwork. The village is located deep in the mountains and can only be reached by a bus that runs once a day. On the bus, Naoto meets a beautiful girl named Suou Serina, who was born in Kamimori but left the village as a child due to a certain incident. Serina and Naoto stay at the Suou residence, and as they spend more time together, their relationship gradually grows closer.
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| Name | Characters | Importance | Weight |
|---|---|---|---|
| Yukata Clothes | 3 | 1.85 | 2.56 |
| Bald Hair | 2 | 2.28 | 2.50 |
| Twin Handjob Engages in (Sexual) | 2 | 2.22 | 2.44 |
| Wrinkles Body | 2 | 2.14 | 2.35 |
| Itome Eyes | 2 | 2.12 | 2.33 |
| Old Body | 2 | 1.94 | 2.13 |
| Twin Sister Role | 2 | 1.86 | 2.04 |
| Aloha Shirt Clothes | 1 | 2.93 | 2.03 |
| Twin Boobjob Engages in (Sexual) | 2 | 1.76 | 1.94 |
| Reverse Missionary Subject of (Sexual) | 2 | 1.73 | 1.91 |
| Sun Hat Clothes | 1 | 2.71 | 1.88 |
| Facial Piercing Body | 1 | 2.69 | 1.87 |
| Mysterious Personality | 2 | 1.69 | 1.86 |
| Title Character Role | 1 | 2.68 | 1.86 |
| Grandfather Role | 1 | 2.64 | 1.83 |
| Uncle Role | 1 | 2.62 | 1.81 |
| Kimono Clothes | 2 | 1.55 | 1.71 |
| Sensitive Personality | 1 | 2.34 | 1.62 |
| Seventh Posture Subject of (Sexual) | 2 | 1.45 | 1.60 |
| Twin Blowjob Engages in (Sexual) | 2 | 1.44 | 1.58 |
| Disappearance Subject of | 1 | 2.26 | 1.57 |
| Missionary Subject of (Sexual) | 3 | 1.11 | 1.54 |
| Grey Hair | 2 | 1.39 | 1.52 |
| Sanpaku Eyes Eyes | 1 | 2.17 | 1.51 |
| Vindictive Personality | 1 | 2.17 | 1.50 |
| Stubble Hair | 1 | 2.16 | 1.50 |
| Tominagi Subject of (Sexual) | 2 | 1.36 | 1.49 |
| Bukkake Subject of (Sexual) | 2 | 1.34 | 1.48 |
| Sundress Clothes | 1 | 2.13 | 1.47 |
| Pubic Hair Hair | 2 | 1.34 | 1.47 |
| Yamato Nadeshiko Role | 1 | 2.06 | 1.43 |
| Secretive Personality | 1 | 2.00 | 1.39 |
| Curious Personality | 1 | 1.94 | 1.34 |
| Immature Personality | 1 | 1.93 | 1.34 |
| Beard Hair | 1 | 1.90 | 1.32 |
| Anal Sex Subject of (Sexual) | 2 | 1.19 | 1.30 |
| Handjob Engages in (Sexual) | 2 | 1.16 | 1.27 |
| Outdoor Sex Engages in (Sexual) | 2 | 1.16 | 1.27 |
| Sitting Sex Engages in (Sexual) | 1 | 1.83 | 1.27 |
| Moustache Hair | 1 | 1.83 | 1.27 |
| Mature Personality | 1 | 1.83 | 1.27 |
| Bun Hair | 1 | 1.78 | 1.23 |
| Confinement Subject of | 1 | 1.76 | 1.22 |
| Multiple Penetration Subject of (Sexual) | 1 | 1.75 | 1.21 |
| Spit-roast Subject of (Sexual) | 1 | 1.74 | 1.21 |
| Teal Eyes | 1 | 1.72 | 1.19 |
| Orphan Role | 1 | 1.71 | 1.18 |
| Quickie Fix Subject of (Sexual) | 2 | 1.08 | 1.18 |
| Boobjob Engages in (Sexual) | 2 | 1.06 | 1.17 |
| Father Role | 1 | 1.68 | 1.16 |
| Carefree Personality | 1 | 1.67 | 1.16 |
| Olive Body | 1 | 1.66 | 1.15 |
| Garnet Eyes | 1 | 1.65 | 1.14 |
| Kind Personality | 2 | 1.04 | 1.14 |
| University Student Role | 1 | 1.62 | 1.12 |
| Black Hair | 3 | 0.81 | 1.12 |
| Refined Personality | 1 | 1.55 | 1.08 |
| Blowjob Subject of (Sexual) | 1 | 1.53 | 1.06 |
| Blowjob Engages in (Sexual) | 3 | 0.76 | 1.05 |
| Cowgirl Subject of (Sexual) | 2 | 0.95 | 1.05 |
| Big Breast Sizes Body | 1 | 1.47 | 1.02 |
| Mother Role | 1 | 1.47 | 1.02 |
| Not a Virgin Role | 1 | 1.45 | 1.00 |
| Brown Eyes | 2 | 0.90 | 0.99 |
| Earrings Clothes | 1 | 1.42 | 0.98 |
| Nipple Sucking Subject of (Sexual) | 1 | 1.39 | 0.96 |
| Adult Body | 1 | 1.36 | 0.94 |
| Waist Length+ Hair | 2 | 0.80 | 0.88 |
| Sixty-nine Engages in (Sexual) | 1 | 1.25 | 0.87 |
| Violet Hair | 1 | 1.19 | 0.82 |
| Standing Sex Subject of (Sexual) | 1 | 1.18 | 0.82 |
| Cunnilingus Subject of (Sexual) | 1 | 1.17 | 0.81 |
| Shirt Clothes | 1 | 1.15 | 0.80 |
| Parted to Side Hair | 1 | 1.07 | 0.74 |
| Sitting Sex Subject of (Sexual) | 1 | 1.05 | 0.73 |
| Thigh-high Stockings Clothes | 1 | 1.03 | 0.72 |
| Sidehair Hair | 1 | 0.98 | 0.68 |
| Teen Body | 2 | 0.61 | 0.67 |
| Doggy Style Subject of (Sexual) | 1 | 0.92 | 0.64 |
| Shoulder-length Hair | 1 | 0.91 | 0.63 |
| Slim Body | 2 | 0.57 | 0.63 |
| Blond Hair | 1 | 0.88 | 0.61 |
| Virgin Sex Engages in (Sexual) | 1 | 0.84 | 0.58 |
| Blue Eyes | 1 | 0.80 | 0.55 |
| Long Hair | 1 | 0.75 | 0.52 |
| Pale Body | 3 | 0.37 | 0.51 |
| Brown Hair | 1 | 0.68 | 0.47 |
| Short Hair | 1 | 0.61 | 0.42 |