amaya in hiragana is あまや but normally names are written in katakana so the katakana version is アマヤ.
Improvement:
Amaya is an originally Japanese name and has no specific reason to be written in katakana unless the one writing it wants to do so to simplify or etc. It has many ways of writing including simple hiragana あまや or kanji complex like 天矢 etc.
Amaya Brecher's birth name is Amaya H. Brecher.
Rafael Amaya's birth name is Jos Rafael Amaya Nuez.
Remedios Amaya's birth name is Mara Dolores Amaya Vega.
Amaya Forch's birth name is Amaya Vivianne Forch Barry.
In hiragana, it is written: ねずみ
Amaya Uranga's birth name is Mara Icar Amaya Uranga Amzaga.
hiragana katakana and kanji and furigana which is a mix of hiragana and katakana
Kobe is written in hiragana as こうべ.
the best last name for that is Amaya Nakamura
'Kasa.'
i wanna know how to write desu
Nagasaki in hiragana is ながさき.