est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
Due to her parents' work, Serina Aoyama is staying with her father's best friend, Dr. Yamada, a doctor of engineering. Her son, Susumu, is strong despite his cute face. After all, he's a cyborg! (Source: Manga Library Z, translated) Note: Includes the one shot Saint Valentine Wars (セントバレンタイン☆ウォーズ).
Source: AniList
External databases: MADB · AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections
Volumes
MBコミックス First edition
1vols · 1989-11
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Darling☆S
1989 · モテギ春恵 · 3vols
恋愛Dungeon
1990 · モテギ春恵 · 2vols
Albaria no Otome
アルバレアの乙女
1998 · モテギ春恵, 本多かほる · 2vols · Shōjo
ActionAdventureFantasy
明るい青春メガミックス
1993 · モテギ春恵 · 1vols
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Cinderella no Kaidan
シンデレラの階段
1986 · 一条ゆかり · 1vols · Shōjo
Romance
Coconuts AVE.
ココナッツAVE.
1986 · 三浦みつる · 10vols · Shōnen
ComedyRomance
Encore ga Sankai
アンコールが3回
1986 · くらもちふさこ · 5vols · Shōjo
DramaFamilyRomanceMusic
Gin no Chimera
銀のキメイラ
1986 · 中村地里 · 7vols
Sci-FiActionRomance
B.C. Toraianguru
B.C.トライアングル
1986 · 中西やすひろ · 3vols · Shōnen
ActionAdventureEcchiComedyRomance
Hikari no Densetsu
光の伝説
1986 · 麻生いずみ, ホーム社 · 24vols · Shōjo
SportsDanceSchoolRomanceSlice of Life