This character is a Other Letter and is mainly used in the Katakana script.
The glyph is not a composition. Its East Asian Width is wide. In bidirectional text it is written from left to right. When changing direction it is not mirrored. This katakana joins with other adjacent katakana to form a word. U+30AB offers a line break opportunity at its position, except in some numeric contexts. The glyph can be confused with one other glyph.
The Wikipedia has the following information about this codepoint:
Ka (hiragana: か, katakana: カ) is one of the Japanese kana, which each represent one mora. Both represent [ka]. The shapes of these kana both originate from 加.
The character can be combined with a dakuten, to form が in hiragana, ガ in katakana and ga in Hepburn romanization. The phonetic value of the modified character is [ɡa] in initial positions and varying between [ŋa] and [ɣa] in the middle of words.
A handakuten (゜) does not occur with ka in normal Japanese text, but it may be used by linguists to indicate a nasal pronunciation [ŋa].
か is the most commonly used interrogatory particle. It is also sometimes used to delimit choices.
が is a Japanese case marker, as well as a conjunctive particle. It is used to denote the focus of attention in a sentence, especially to the grammatical subject.