Quick answer
Shion is a boy/girl name.
Meaning and history
From Japanese 紫苑 ( shion ) meaning "aster". It can also come from 詩 ( shi ) meaning "poem" and 音 ( on ) meaning "sound". Other kanji combinations can form this name as well.
Notes and context
Usage: japanese | Japanese Hiragana: しおん; Japanese Katakana: シオン