Kosaka

Kosaka (小坂, 小阪 or 古坂) and Kōsaka (高坂 or 向坂, also spelled Kousaka) are two separate Japanese surnames, distinguished by the length of the vowel in the first syllable of each surname. They are sometimes spelled identically in romanisation due to omission of the macron in the latter surname. Notable people with these surnames include:

Daimaou Kosaka (古坂大魔王), comedian
Kenji Kosaka (小坂憲次), politician
Kitarō Kōsaka (高坂希太郎), animator and film director
Makoto Kosaka (小坂誠), professional baseball player
Nao Kosaka (小坂菜緒), idol, model, actress and member of the Japanese girls idol group Hinatazaka46
Kōsaka Masanobu (高坂昌信), samurai warrior
Riyu Kosaka (小坂りゆ), member of the Konami-produced J-Pop group BeForU
Tadahiro Kosaka (小坂忠広), race walker
Yuka Kosaka (小阪由佳), gravure idol
Zentaro Kosaka (小坂善太郎), politician

Fictional characters:

Chihiro Kosaka (小阪ちひろ), a character from The World God Only Knows
Honoka Kōsaka (高坂穂乃果), a character from Love Live!
Kirino Kōsaka (高坂桐乃), a character from Oreimo
Tamaki Kōsaka (向坂環), a character from To Heart 2
Reina Kousaka (高坂麗奈), a character from Sound! Euphonium

See also