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My Brother's Secret
義弟に秘密がありまして · ぎてい に ひみつ が ありまして
est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
Shogo and Haruya were perfect strangers before Shogo's mom and Haruya's dad decided to get married. One day, Shogo finds out Haruya's naughty little secret, and ever since, they become "partners in crime"...!! Is Haruya the cool and cocky jerk he seems to be, or is he the dirty and adorable younger man he shows Shogo? A story about family and love revolving around a passionate ex-troublemaker who falls in love with his cute younger stepbrother! (Source: Renta!)
Source: AniList
External databases: MADB · AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections
Volumes
G-Lish comics First edition
1vols · 2018-04
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まほろばの日々
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レンアイ同居人。
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夏が来たのでキスしませんか
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アラビアンでないと!?
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その気にさせるな!
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Chikashitsu Himitsu Club
地下室秘密倶楽部
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甘い顔は見せないで
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How About a Boyfriend?
いっそもう、くどきたい!
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