The protagonist is a high school student whose life changes drastically when one day his mother tells him a man has proposed to her and she asks for his blessing. Being raised entirely by his mother he accepts so she can be happy. Then the day he finally meets his new family he shockingly finds out his new sister is the school's student council president and popular student Sakuya, as he now forms part of the Aotsuki family. Sakuya has an unnatural fixation on making him her "brother pet". His cousin Shuri feels threatened by Sakuya taking the protagonist's sister spot and his childhood friend Kotori hates him for some reason. Eventually he is forced to run as the next student council president. Sakuya, Shuri, Kotori and Sakuya's twin sisters Yuzu and Kana will help him in his campaign. Who will the protagonist choose to help him in the election?
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| Name | Characters | Importance | Weight |
|---|---|---|---|
| Student Council Treasurer Role | 2 | 3.33 | 3.66 |
| Step Sister Role | 3 | 2.44 | 3.38 |
| Brother Complex Personality | 4 | 2.06 | 3.31 |
| Sleepwalking Engages in | 1 | 3.42 | 2.37 |
| Indian Role | 1 | 3.19 | 2.21 |
| Bindi (Mark) Body | 1 | 3.16 | 2.19 |
| Student Council Secretary Role | 1 | 3.10 | 2.15 |
| Braid Hair Tie Hair | 1 | 3.07 | 2.13 |
| Twin Buttjob Engages in (Sexual) | 1 | 3.03 | 2.10 |
| Twin Sister Role | 2 | 1.86 | 2.04 |
| Multiple Braids Hair | 1 | 2.86 | 1.98 |
| Kneepit Sex Engages in (Sexual) | 1 | 2.80 | 1.94 |
| Twin Boobjob Engages in (Sexual) | 2 | 1.76 | 1.94 |
| Sleep Sex Engages in (Sexual) | 1 | 2.79 | 1.94 |
| Student Council Vice President Role | 1 | 2.65 | 1.83 |
| Hair Loopies Hair | 1 | 2.51 | 1.74 |
| Band-aid Clothes | 1 | 2.51 | 1.74 |
| Full Sister Role | 2 | 1.57 | 1.73 |
| Older Sister Role | 2 | 1.55 | 1.71 |
| Braided Crown Hair | 1 | 2.37 | 1.64 |
| Student Council Member Role | 1 | 2.36 | 1.64 |
| Half-Japanese Role | 1 | 2.32 | 1.61 |
| Younger Sister Role | 2 | 1.44 | 1.58 |
| Foreigner Role | 1 | 2.27 | 1.57 |
| Swimsuit Clothes | 1 | 2.25 | 1.56 |
| Blackmail Engages in | 1 | 2.22 | 1.54 |
| Spats Clothes | 1 | 2.19 | 1.52 |
| Virgin Sex Engages in (Sexual) | 5 | 0.84 | 1.51 |
| Knee-high Socks Clothes | 2 | 1.37 | 1.51 |
| High School Student Role | 5 | 0.84 | 1.50 |
| Strapless Dress Clothes | 1 | 2.17 | 1.50 |
| Boobjob Engages in (Sexual) | 3 | 1.06 | 1.47 |
| Revenge Engages in | 1 | 2.10 | 1.45 |
| Student Council President Role | 1 | 2.06 | 1.43 |
| Sly Personality | 1 | 2.05 | 1.42 |
| Amber Eyes | 3 | 1.02 | 1.42 |
| Clumsy Personality | 1 | 1.93 | 1.34 |
| School Uniform Clothes | 5 | 0.74 | 1.32 |
| Cousin Role | 1 | 1.88 | 1.30 |
| Tsundere Personality | 1 | 1.87 | 1.30 |
| Reverse Spitroast Subject of (Sexual) | 1 | 1.85 | 1.28 |
| Yukata Clothes | 1 | 1.85 | 1.28 |
| Deredere Personality | 1 | 1.75 | 1.22 |
| Dark Body | 1 | 1.70 | 1.18 |
| Olive Body | 1 | 1.66 | 1.15 |
| Thigh-high Stockings Clothes | 2 | 1.03 | 1.14 |
| Garter Belt Stockings Clothes | 1 | 1.61 | 1.11 |
| Waist Length+ Hair | 3 | 0.80 | 1.11 |
| Teen Body | 5 | 0.61 | 1.10 |
| Sidehair Hair | 2 | 0.98 | 1.07 |
| Energetic Personality | 1 | 1.53 | 1.06 |
| Slim Body | 5 | 0.57 | 1.02 |
| Incest Engages in (Sexual) | 1 | 1.47 | 1.02 |
| Smart Personality | 1 | 1.47 | 1.02 |
| Bikini Clothes | 1 | 1.46 | 1.01 |
| Blond Hair | 2 | 0.88 | 0.97 |
| Hairpin Clothes | 1 | 1.39 | 0.97 |
| Brown Hair | 3 | 0.68 | 0.94 |
| Childhood Friend Role | 1 | 1.25 | 0.87 |
| Ribbon Tie Clothes | 1 | 1.24 | 0.86 |
| Ribbon Hair Tie Clothes | 1 | 1.18 | 0.82 |
| Cunnilingus Subject of (Sexual) | 1 | 1.17 | 0.81 |
| Handjob Engages in (Sexual) | 1 | 1.16 | 0.80 |
| Ponytail Hair | 1 | 1.10 | 0.76 |
| Tareme Eyes | 1 | 1.09 | 0.76 |
| Green Eyes | 1 | 1.01 | 0.70 |
| Straight Hair | 1 | 0.96 | 0.66 |
| Pale Body | 4 | 0.37 | 0.60 |
| Blue Eyes | 1 | 0.80 | 0.55 |
| Blowjob Engages in (Sexual) | 1 | 0.76 | 0.53 |
| Long Hair | 1 | 0.75 | 0.52 |
| Short Hair | 1 | 0.61 | 0.42 |