For Nitta Kazuki everything has gone wrong. It Seems that his younger sister Rina can not stand him. But then why is she following him everywhere? How does he feel about her?
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| Name | Characters | Importance | Weight |
|---|---|---|---|
| Middle School Student Role | 6 | 2.29 | 4.46 |
| Mon Personality | 1 | 3.82 | 2.65 |
| Turndown Subject of | 2 | 2.39 | 2.63 |
| Origami Engages in | 1 | 3.78 | 2.62 |
| Classmate Role | 7 | 1.23 | 2.55 |
| Sex on Roof Engages in (Sexual) | 2 | 2.29 | 2.52 |
| Not Sexually Involved Engages in (Sexual) | 5 | 1.35 | 2.43 |
| Kouhai Role | 3 | 1.63 | 2.26 |
| Drinking Engages in | 3 | 1.61 | 2.24 |
| Friend Role | 4 | 1.20 | 1.93 |
| Ball-cupping Subject of (Sexual) | 1 | 2.73 | 1.89 |
| Birthday Celebration Subject of | 1 | 2.73 | 1.89 |
| Turndown Engages in | 1 | 2.57 | 1.78 |
| Piggyback Ride Subject of | 1 | 2.52 | 1.75 |
| Wake-up Sex Subject of (Sexual) | 1 | 2.48 | 1.72 |
| Gardening Engages in | 1 | 2.45 | 1.70 |
| Legwear Footjob Engages in (Sexual) | 1 | 2.44 | 1.69 |
| Wake-up Sex Engages in (Sexual) | 1 | 2.36 | 1.63 |
| Deepthroat Subject of (Sexual) | 1 | 2.35 | 1.63 |
| French Kiss Engages in (Sexual) | 2 | 1.48 | 1.62 |
| Ball-cupping Engages in (Sexual) | 1 | 2.33 | 1.61 |
| Loud Personality | 1 | 2.31 | 1.60 |
| Intercrural Sex Subject of (Sexual) | 1 | 2.28 | 1.58 |
| Bondage Sex Engages in (Sexual) | 1 | 2.28 | 1.58 |
| Bullying Engages in | 1 | 2.25 | 1.56 |
| Sexual Cosplay Engages in (Sexual) | 1 | 2.24 | 1.55 |
| Bathroom Sex Engages in (Sexual) | 2 | 1.39 | 1.52 |
| Footjob Subject of (Sexual) | 1 | 2.18 | 1.51 |
| Talkative Personality | 1 | 2.16 | 1.50 |
| Shimapan Clothes | 1 | 2.13 | 1.48 |
| Old Type School Swimsuit Clothes | 1 | 2.09 | 1.45 |
| Flat Chest Body | 1 | 2.09 | 1.45 |
| Flirting Subject of | 1 | 2.08 | 1.44 |
| Bullying Subject of | 1 | 2.06 | 1.43 |
| Butterfly Engages in (Sexual) | 1 | 2.02 | 1.40 |
| Nipple Teasing Engages in (Sexual) | 1 | 2.01 | 1.39 |
| Sex in Public Places Engages in (Sexual) | 2 | 1.26 | 1.38 |
| Full Brother Role | 1 | 1.95 | 1.35 |
| Quickie Fix Engages in (Sexual) | 1 | 1.88 | 1.30 |
| Fang Body | 1 | 1.88 | 1.30 |
| Jealous Personality | 1 | 1.87 | 1.30 |
| Tsundere Personality | 1 | 1.87 | 1.30 |
| Intercrural Sex Engages in (Sexual) | 1 | 1.84 | 1.28 |
| String Ribbon Tie Clothes | 1 | 1.82 | 1.26 |
| Deepthroat Engages in (Sexual) | 1 | 1.80 | 1.25 |
| Hidden Eyes | 1 | 1.80 | 1.25 |
| Flirting Engages in | 1 | 1.79 | 1.24 |
| Handjob Subject of (Sexual) | 1 | 1.75 | 1.21 |
| Older Brother Role | 1 | 1.73 | 1.20 |
| Footjob Engages in (Sexual) | 1 | 1.72 | 1.19 |
| Sport Bloomers Clothes | 1 | 1.72 | 1.19 |
| Cowgirl Engages in (Sexual) | 1 | 1.71 | 1.19 |
| Sex with Protagonist Only Engages in (Sexual) | 1 | 1.68 | 1.16 |
| Popular Role | 1 | 1.64 | 1.13 |
| Maid's Headdress Clothes | 1 | 1.62 | 1.13 |
| Vaginal Fingering Engages in (Sexual) | 1 | 1.62 | 1.12 |
| Senpai Role | 1 | 1.61 | 1.12 |
| Ore Personality | 1 | 1.58 | 1.09 |
| Bondage Sex Subject of (Sexual) | 1 | 1.58 | 1.09 |
| Nipple Teasing Subject of (Sexual) | 1 | 1.57 | 1.09 |
| Full Sister Role | 1 | 1.56 | 1.08 |
| Cunnilingus Engages in (Sexual) | 1 | 1.55 | 1.08 |
| Blowjob Subject of (Sexual) | 1 | 1.52 | 1.05 |
| Maid's Dress Clothes | 1 | 1.51 | 1.05 |
| Younger Sister Role | 1 | 1.44 | 1.00 |
| Cooking Engages in | 1 | 1.42 | 0.98 |
| Tank Top Clothes | 1 | 1.41 | 0.98 |
| Pleated Skirt Clothes | 1 | 1.39 | 0.97 |
| Tsurime Eyes | 1 | 1.38 | 0.96 |
| Virgin Sex Engages in (Sexual) | 2 | 0.85 | 0.93 |
| Watashi Personality | 1 | 1.25 | 0.87 |
| Red Eyes | 1 | 1.20 | 0.83 |
| Ribbon Hair Tie Clothes | 1 | 1.19 | 0.83 |
| Butterfly Subject of (Sexual) | 1 | 1.17 | 0.81 |
| Cunnilingus Subject of (Sexual) | 1 | 1.16 | 0.81 |
| Handjob Engages in (Sexual) | 1 | 1.16 | 0.80 |
| Big Breasts Body | 1 | 1.13 | 0.78 |
| Twin Tails Hair | 1 | 1.13 | 0.78 |
| Quickie Fix Subject of (Sexual) | 1 | 1.08 | 0.75 |
| Vaginal Fingering Subject of (Sexual) | 1 | 1.08 | 0.75 |
| Thigh-high Stockings Clothes | 1 | 1.04 | 0.72 |
| Spiky Bangs Hair | 1 | 1.00 | 0.69 |
| Teen Body | 2 | 0.62 | 0.68 |
| Cowgirl Subject of (Sexual) | 1 | 0.95 | 0.66 |
| Blond Hair | 1 | 0.89 | 0.62 |
| Black Hair | 1 | 0.80 | 0.56 |
| Blowjob Engages in (Sexual) | 1 | 0.76 | 0.53 |
| Long Hair | 1 | 0.75 | 0.52 |
| Short Hair | 1 | 0.61 | 0.42 |
| Pale Body | 2 | 0.37 | 0.40 |
| Slim Body | 1 | 0.58 | 0.40 |