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 | 2.28 | 4.43 |
| Turndown Engages in | 2 | 2.59 | 2.84 |
| Mon Personality | 1 | 3.80 | 2.63 |
| Origami Engages in | 1 | 3.80 | 2.63 |
| Turndown Subject of | 2 | 2.39 | 2.63 |
| Classmate Role | 7 | 1.23 | 2.56 |
| Sex on Roof Engages in (Sexual) | 2 | 2.30 | 2.53 |
| Not Sexually Involved Engages in (Sexual) | 5 | 1.36 | 2.44 |
| Drinking Engages in | 3 | 1.64 | 2.27 |
| Kouhai Role | 3 | 1.62 | 2.25 |
| Ball-cupping Subject of (Sexual) | 1 | 2.79 | 1.93 |
| Birthday Celebration Subject of | 1 | 2.73 | 1.89 |
| Piggyback Ride Subject of | 1 | 2.53 | 1.76 |
| Wake-up Sex Subject of (Sexual) | 1 | 2.50 | 1.73 |
| Legwear Footjob Engages in (Sexual) | 1 | 2.48 | 1.72 |
| Gardening Engages in | 1 | 2.44 | 1.69 |
| Friend Role | 3 | 1.21 | 1.68 |
| French Kiss Engages in (Sexual) | 2 | 1.52 | 1.67 |
| Wake-up Sex Engages in (Sexual) | 1 | 2.38 | 1.65 |
| Deepthroat Subject of (Sexual) | 1 | 2.36 | 1.64 |
| Ball-cupping Engages in (Sexual) | 1 | 2.36 | 1.63 |
| Loud Personality | 1 | 2.30 | 1.60 |
| Intercrural Sex Subject of (Sexual) | 1 | 2.29 | 1.59 |
| Bondage Sex Engages in (Sexual) | 1 | 2.26 | 1.57 |
| Bullying Engages in | 1 | 2.26 | 1.57 |
| Sexual Cosplay Engages in (Sexual) | 1 | 2.24 | 1.55 |
| Bathroom Sex Engages in (Sexual) | 2 | 1.39 | 1.53 |
| Footjob Subject of (Sexual) | 1 | 2.18 | 1.51 |
| Talkative Personality | 1 | 2.17 | 1.50 |
| Flirting Subject of | 1 | 2.14 | 1.48 |
| Shimapan Clothes | 1 | 2.12 | 1.47 |
| Flat Chest Body | 1 | 2.10 | 1.46 |
| Old Type School Swimsuit Clothes | 1 | 2.08 | 1.44 |
| Bullying Subject of | 1 | 2.06 | 1.43 |
| Butterfly Engages in (Sexual) | 1 | 2.04 | 1.41 |
| Nipple Teasing Engages in (Sexual) | 1 | 2.04 | 1.41 |
| Sex in Public Places Engages in (Sexual) | 2 | 1.26 | 1.39 |
| Full Brother Role | 1 | 1.95 | 1.35 |
| Quickie Fix Engages in (Sexual) | 1 | 1.89 | 1.31 |
| Jealous Personality | 1 | 1.89 | 1.31 |
| Fang Body | 1 | 1.88 | 1.30 |
| Tsundere Personality | 1 | 1.87 | 1.30 |
| Intercrural Sex Engages in (Sexual) | 1 | 1.85 | 1.28 |
| Deepthroat Engages in (Sexual) | 1 | 1.81 | 1.26 |
| String Ribbon Tie Clothes | 1 | 1.81 | 1.26 |
| Flirting Engages in | 1 | 1.81 | 1.25 |
| Hidden Eyes | 1 | 1.81 | 1.25 |
| Handjob Subject of (Sexual) | 1 | 1.76 | 1.22 |
| Older Brother Role | 1 | 1.72 | 1.20 |
| Cowgirl Engages in (Sexual) | 1 | 1.72 | 1.19 |
| Footjob Engages in (Sexual) | 1 | 1.71 | 1.19 |
| Sport Bloomers Clothes | 1 | 1.71 | 1.18 |
| Sex with Protagonist Only Engages in (Sexual) | 1 | 1.69 | 1.17 |
| Popular Role | 1 | 1.64 | 1.13 |
| Vaginal Fingering Engages in (Sexual) | 1 | 1.62 | 1.13 |
| Maid's Headdress Clothes | 1 | 1.62 | 1.12 |
| Senpai Role | 1 | 1.61 | 1.11 |
| Nipple Teasing Subject of (Sexual) | 1 | 1.59 | 1.10 |
| Ore Personality | 1 | 1.59 | 1.10 |
| Full Sister Role | 1 | 1.57 | 1.09 |
| Cunnilingus Engages in (Sexual) | 1 | 1.56 | 1.08 |
| Bondage Sex Subject of (Sexual) | 1 | 1.56 | 1.08 |
| Blowjob Subject of (Sexual) | 1 | 1.53 | 1.06 |
| Maid's Dress Clothes | 1 | 1.51 | 1.05 |
| Younger Sister Role | 1 | 1.44 | 1.00 |
| Tank Top Clothes | 1 | 1.43 | 0.99 |
| Pleated Skirt Clothes | 1 | 1.41 | 0.98 |
| Cooking Engages in | 1 | 1.41 | 0.98 |
| Tsurime Eyes | 1 | 1.38 | 0.95 |
| Virgin Sex Engages in (Sexual) | 2 | 0.84 | 0.93 |
| Watashi Personality | 1 | 1.26 | 0.88 |
| Red Eyes | 1 | 1.19 | 0.83 |
| Big Breasts Body | 1 | 1.19 | 0.82 |
| Ribbon Hair Tie Clothes | 1 | 1.18 | 0.82 |
| Butterfly Subject of (Sexual) | 1 | 1.17 | 0.81 |
| Cunnilingus Subject of (Sexual) | 1 | 1.17 | 0.81 |
| Handjob Engages in (Sexual) | 1 | 1.16 | 0.80 |
| Twin Tails Hair | 1 | 1.12 | 0.78 |
| Vaginal Fingering Subject of (Sexual) | 1 | 1.08 | 0.75 |
| Quickie Fix Subject of (Sexual) | 1 | 1.08 | 0.75 |
| Thigh-high Stockings Clothes | 1 | 1.03 | 0.72 |
| Spiky Bangs Hair | 1 | 1.01 | 0.70 |
| Teen Body | 2 | 0.61 | 0.67 |
| Cowgirl Subject of (Sexual) | 1 | 0.95 | 0.66 |
| Blond Hair | 1 | 0.88 | 0.61 |
| Black Hair | 1 | 0.81 | 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 | 0.41 |
| Slim Body | 1 | 0.57 | 0.40 |