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Iinazuke wa Imouto-sama!


TitleIinazuke wa Imouto-sama!
Original title許嫁は妹さま!
LengthShort (2 - 10 hours)
Imouto Translations
Alternative version
Amakan Ecchi na "Love Icha" Tsumechai...
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Shun lives alone with his sister Yuna after their father remarries. Yuna acts harshly to Shun and often yells at him for the slightest mistakes. Suddenly Haruka arrives unannounced and claims to be Shun and Yuna's new sister. Since she's Shun's new sister she believes that must mean they love each other and if they love each other that must mean they're engaged to be married and if they're engaged to be married that must mean they should do ecchi things together.

Yuna fights back for her brother and announces that she won't give Shun up to Haruka or anyone! Haruka then concludes that Yuna must love Shun too and if she loves Shun too that must mean they're engaged to be married as well and if they're engaged to be married as well that must mean they should all do ecchi things together!

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Usami Shun宇佐美 駿
RoleBetrothed, Full Brother, High School Student, Step Brother


At the start Shun lives alone with his sister Yuuna. He's a second year highschool student and the envy of most boys in his class who have a crush on his sister.

Main characters

Usami Haruka宇佐美 はるかAB
MeasurementsHeight: 156cm, Bust-Waist-Hips: 91-56-89cm
Birthday31 October
HairParted to Side, Pink, Ringlet, Sidehair, Waist Length+, Wavy
EyesTareme, Violet
BodyBig Breast Sizes, Pale, Slim, Teen
ClothesHair Flower, Headband, Miniskirt, Naked, Pajamas, Panties, School Uniform, Transparent
PersonalityAirhead, Brocon, Clumsy, Deredere, Desu, Naive
RoleDomestic Partner, High School Student, Middle Sister, Step Sister
Voiced byMatsuda Risa


Shun and Yuuna's new sister since their parents have married. Haruka is one day older than Yuuna so she makes Yuuna call her 'onee-chan'.

Usami Yuuna宇佐美 優奈A
MeasurementsHeight: 150cm, Bust-Waist-Hips: 70-53-76cm
Birthday1 November
HairAhoge, Blue, Shoulder-length, Sidehair, Spiky Bangs, Twin Tails
EyesGarnet, Tsurime
BodyPale, Slim, Teen
ClothesNaked, Necktie, Over The Knee Socks, Pajamas, Ribbon Hair Tie, Sailor School Uniform, School Uniform
PersonalityBrocon, Tsundere
RoleDomestic Partner, Full Sister, High School Student, Student Council Member
Engages inCooking
Subject ofTeasing
Voiced byManaka Umi


Shun's younger sister who is a first-year high school student. She's a good cook and homemaker such that Shun comments that she will make a wonderful bride someday.