This character is a Other Letter and is mainly used in the Hiragana script.
The glyph is a canonical composition of the glyphs Hiragana Letter Ha, Combining Katakana-Hiragana Voiced Sound Mark. Its East Asian Width is wide. In bidirectional text it is written from left to right. When changing direction it is not mirrored. U+3070 offers a line break opportunity at its position, except in some numeric contexts.
The Wikipedia has the following information about this codepoint:
Ha (hiragana: は, katakana: ハ) is one of the Japanese kana, each of which represent one mora. Both represent [ha]. They are also used as a grammatical particle (in such cases, they denote [wa], including in the greeting "kon'nichiwa") and serve as the topic marker of the sentence. は originates from 波 and ハ from 八.
In the Sakhalin dialect of the Ainu language, the katakana ハ can be written as small ㇵ to represent a final h sound after an a sound (アㇵ ah). This, along with other extended katakana, was developed by Japanese linguists to represent sounds in Ainu not present in standard Japanese katakana.
When used as a particle, は is pronounced as わ [wa]. は is also pronounced as わ in some words (e.g. もののあはれ pronounced as mono no aware).