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 | 3.32 | 3.65 |
| Step Sister Role | 3 | 2.44 | 3.38 |
| Brother Complex Personality | 4 | 2.06 | 3.32 |
| Sleepwalking Engages in | 1 | 3.41 | 2.36 |
| Indian Role | 1 | 3.18 | 2.20 |
| Bindi (Mark) Body | 1 | 3.12 | 2.16 |
| Student Council Secretary Role | 1 | 3.10 | 2.15 |
| Braid Hair Tie Hair | 1 | 3.05 | 2.11 |
| Twin Buttjob Engages in (Sexual) | 1 | 3.02 | 2.09 |
| Twin Sister Role | 2 | 1.86 | 2.04 |
| Multiple Braids Hair | 1 | 2.88 | 2.00 |
| Kneepit Sex Engages in (Sexual) | 1 | 2.82 | 1.96 |
| Twin Boobjob Engages in (Sexual) | 2 | 1.77 | 1.95 |
| Sleep Sex Engages in (Sexual) | 1 | 2.73 | 1.89 |
| Student Council Vice President Role | 1 | 2.67 | 1.85 |
| Hair Loopies Hair | 1 | 2.53 | 1.76 |
| Band-aid Clothes | 1 | 2.51 | 1.74 |
| Older Sister Role | 2 | 1.56 | 1.71 |
| Full Sister Role | 2 | 1.56 | 1.71 |
| Student Council Member Role | 1 | 2.37 | 1.65 |
| Braided Crown Hair | 1 | 2.35 | 1.63 |
| Sailor School Uniform Clothes | 2 | 1.47 | 1.62 |
| Half-Japanese Role | 1 | 2.33 | 1.61 |
| Bikini Clothes | 2 | 1.45 | 1.60 |
| Younger Sister Role | 2 | 1.45 | 1.59 |
| Swimsuit Clothes | 1 | 2.29 | 1.59 |
| Foreigner Role | 1 | 2.27 | 1.58 |
| High School Student Role | 5 | 0.86 | 1.55 |
| Blackmail Engages in | 1 | 2.22 | 1.54 |
| Virgin Sex Engages in (Sexual) | 5 | 0.85 | 1.53 |
| Spats Clothes | 1 | 2.20 | 1.53 |
| Knee-high Socks Clothes | 2 | 1.39 | 1.53 |
| Strapless Dress Clothes | 1 | 2.19 | 1.51 |
| Boobjob Engages in (Sexual) | 3 | 1.07 | 1.49 |
| Revenge Engages in | 1 | 2.08 | 1.44 |
| Student Council President Role | 1 | 2.08 | 1.44 |
| Amber Eyes | 3 | 1.03 | 1.43 |
| Sly Personality | 1 | 2.02 | 1.40 |
| Clumsy Personality | 1 | 1.94 | 1.34 |
| Tsundere Personality | 1 | 1.88 | 1.30 |
| Cousin Role | 1 | 1.88 | 1.30 |
| Yukata Clothes | 1 | 1.86 | 1.29 |
| Reverse Spitroast Subject of (Sexual) | 1 | 1.84 | 1.28 |
| Twin Tails Hair | 2 | 1.14 | 1.25 |
| Deredere Personality | 1 | 1.74 | 1.21 |
| Dark Body | 1 | 1.67 | 1.16 |
| Thigh-high Stockings Clothes | 2 | 1.05 | 1.15 |
| Olive Body | 1 | 1.64 | 1.14 |
| Waist Length+ Hair | 3 | 0.82 | 1.13 |
| Garter Belt Stockings Clothes | 1 | 1.62 | 1.12 |
| Teen Body | 5 | 0.62 | 1.11 |
| Sidehair Hair | 2 | 0.98 | 1.08 |
| School Uniform Clothes | 3 | 0.77 | 1.06 |
| Energetic Personality | 1 | 1.52 | 1.05 |
| Slim Body | 5 | 0.57 | 1.03 |
| Incest Engages in (Sexual) | 1 | 1.47 | 1.02 |
| Smart Personality | 1 | 1.45 | 1.01 |
| Blond Hair | 2 | 0.89 | 0.98 |
| Hairpin Clothes | 1 | 1.41 | 0.97 |
| Brown Hair | 3 | 0.69 | 0.95 |
| Childhood Friend Role | 1 | 1.26 | 0.87 |
| Ribbon Tie Clothes | 1 | 1.26 | 0.87 |
| Ribbon Hair Tie Clothes | 1 | 1.20 | 0.83 |
| Cunnilingus Subject of (Sexual) | 1 | 1.16 | 0.80 |
| Handjob Engages in (Sexual) | 1 | 1.15 | 0.80 |
| Tareme Eyes | 1 | 1.11 | 0.77 |
| Big Breasts Body | 1 | 1.10 | 0.76 |
| Ponytail Hair | 1 | 1.10 | 0.76 |
| Green Eyes | 1 | 1.02 | 0.71 |
| Straight Hair | 1 | 0.93 | 0.65 |
| Pale Body | 4 | 0.37 | 0.59 |
| Blue Eyes | 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 |