Chihaya has a beautiful older sister Akane, who is very popular among the boys at the school. She loves him greatly as a younger brother, but he thought that they should not have romantic feelings for each other. However, he was unable to get a girlfriend, either because of his standards possibly being elevated due to his older sister or that others viewed them as a couple. He did not give up on his dream, but one day, he received a letter which threatened to divulge his secret if he didn’t deeply kiss his older sister at school within two days. Surprisingly at that time, his childhood friend who had moved away, Sayumi, appeared before him. Her father had remarried his mother, so she would now be living with him, to his astonishment. This change of circumstances caused much tension between him and his older sister. What was the origin of the threatening letter and what will happen to his love life from now on? [From Hau~ Omochikaeri!]
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| Name | Characters | Importance | Weight |
|---|---|---|---|
| Paint Clothes | 2 | 3.32 | 3.64 |
| Step Sister Role | 2 | 2.43 | 2.67 |
| Garnet Eyes | 4 | 1.66 | 2.67 |
| Swimsuit Clothes | 2 | 2.27 | 2.49 |
| Inbreeding Engages in (Sexual) | 2 | 2.21 | 2.42 |
| Non-blood-related Incest Engages in (Sexual) | 2 | 2.16 | 2.37 |
| Swimming Engages in | 2 | 1.97 | 2.16 |
| Incest Engages in (Sexual) | 3 | 1.47 | 2.03 |
| Pajamas Clothes | 2 | 1.75 | 1.92 |
| Coke-bottle Glasses Clothes | 1 | 2.75 | 1.91 |
| Sport Bloomers Clothes | 2 | 1.72 | 1.89 |
| Painting Engages in | 1 | 2.58 | 1.79 |
| Sex in Water Engages in (Sexual) | 2 | 1.56 | 1.72 |
| Big Breast Sizes Body | 2 | 1.54 | 1.69 |
| Non-blood-related Mother Role | 1 | 2.37 | 1.65 |
| Non-blood-related Brother Role | 1 | 2.37 | 1.65 |
| Sexual Fantasy Engages in (Sexual) | 1 | 2.32 | 1.61 |
| Transparent Clothes | 1 | 2.31 | 1.60 |
| Housewife Role | 1 | 2.30 | 1.60 |
| Nightgown Clothes | 1 | 2.29 | 1.59 |
| Knife Items | 1 | 2.24 | 1.55 |
| Moving Engages in | 1 | 2.17 | 1.50 |
| Honor Student Role | 1 | 2.08 | 1.44 |
| Brother Complex Personality | 1 | 2.06 | 1.43 |
| Emotional Personality | 1 | 2.02 | 1.40 |
| Towel Clothes | 1 | 2.01 | 1.40 |
| High School Student Role | 4 | 0.85 | 1.37 |
| Sidehair Hair | 3 | 0.98 | 1.36 |
| Full Brother Role | 1 | 1.95 | 1.35 |
| Strange Personality | 1 | 1.95 | 1.35 |
| Clumsy Personality | 1 | 1.93 | 1.34 |
| Immature Personality | 1 | 1.93 | 1.34 |
| Cosplay Engages in | 1 | 1.92 | 1.33 |
| Part-time Worker Role | 1 | 1.90 | 1.32 |
| Younger Brother Role | 1 | 1.90 | 1.32 |
| Group Sex of One Male and Several Females Engages in (Sexual) | 2 | 1.17 | 1.29 |
| Handjob Engages in (Sexual) | 2 | 1.16 | 1.27 |
| Son Role | 1 | 1.82 | 1.26 |
| Waitstaff Role | 1 | 1.82 | 1.26 |
| Scarf Clothes | 1 | 1.78 | 1.23 |
| Young-adult Body | 4 | 0.76 | 1.23 |
| Bun Hair | 1 | 1.77 | 1.23 |
| Missionary Subject of (Sexual) | 2 | 1.12 | 1.23 |
| Necktie Clothes | 2 | 1.11 | 1.22 |
| School Uniform Clothes | 4 | 0.75 | 1.21 |
| Mischievous Personality | 1 | 1.73 | 1.20 |
| Virgin Sex Engages in (Sexual) | 3 | 0.85 | 1.18 |
| Spoons Subject of (Sexual) | 1 | 1.67 | 1.16 |
| Relaxed Personality | 1 | 1.64 | 1.13 |
| Reverse Cowgirl Subject of (Sexual) | 1 | 1.63 | 1.13 |
| Popular Role | 1 | 1.63 | 1.13 |
| Shy Personality | 1 | 1.62 | 1.12 |
| Lactation Engages in | 1 | 1.59 | 1.10 |
| Spiky Bangs Hair | 2 | 1.00 | 1.10 |
| Apron Clothes | 1 | 1.59 | 1.10 |
| Full Sister Role | 1 | 1.57 | 1.09 |
| Older Sister Role | 1 | 1.56 | 1.08 |
| Blowjob Engages in (Sexual) | 3 | 0.76 | 1.06 |
| Medium Breasts Body | 1 | 1.52 | 1.05 |
| Cowgirl Subject of (Sexual) | 2 | 0.95 | 1.05 |
| Group Sex Engages in (Sexual) | 1 | 1.50 | 1.04 |
| Green Hair | 1 | 1.48 | 1.02 |
| Blouse Clothes | 1 | 1.47 | 1.02 |
| Mother Role | 1 | 1.46 | 1.01 |
| Daughter Role | 1 | 1.46 | 1.01 |
| Teasing Engages in | 1 | 1.45 | 1.00 |
| Younger Sister Role | 1 | 1.44 | 1.00 |
| Jacket Clothes | 1 | 1.42 | 0.98 |
| Cooking Engages in | 1 | 1.42 | 0.98 |
| V Bangs Hair | 1 | 1.41 | 0.98 |
| Hairpin Clothes | 1 | 1.40 | 0.97 |
| Masturbation Engages in (Sexual) | 1 | 1.39 | 0.96 |
| Not Sexually Involved Engages in (Sexual) | 1 | 1.36 | 0.94 |
| Red Hair | 1 | 1.32 | 0.92 |
| Childhood Friend Role | 1 | 1.26 | 0.87 |
| Ribbon Tie Clothes | 1 | 1.25 | 0.87 |
| Classmate Role | 1 | 1.23 | 0.85 |
| Friend Role | 1 | 1.20 | 0.83 |
| Blue Hair | 1 | 1.19 | 0.83 |
| Ribbon Hair Tie Clothes | 1 | 1.19 | 0.83 |
| Standing Sex Subject of (Sexual) | 1 | 1.18 | 0.82 |
| Slim Body | 3 | 0.58 | 0.80 |
| Twin Tails Hair | 1 | 1.13 | 0.78 |
| Tareme Eyes | 1 | 1.10 | 0.76 |
| Miniskirt Clothes | 1 | 1.06 | 0.74 |
| Kind Personality | 1 | 1.03 | 0.71 |
| Doggy Style Subject of (Sexual) | 1 | 0.93 | 0.64 |
| Shoulder-length Hair | 1 | 0.92 | 0.64 |
| Waist Length+ Hair | 1 | 0.81 | 0.56 |
| Black Hair | 1 | 0.81 | 0.56 |
| 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 |
| 1 | 0.00 | 0.00 |