As character names:

U+3034 VERTICAL KANA REPEAT WITH VOICED SOUND MARK UPPER HALF character (〴)

As raw characters:

〴

As a string of HTML entities:

〴

Decoder output:

Byte number 1 is decimal 227, hex 0xE3, octal \343, binary 11100011
This is the first byte of a 3 byte sequence.

Byte number 2 is decimal 128, hex 0x80, octal \200, binary 10000000
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 180, hex 0xB4, octal \264, binary 10110100
This is continuation byte 2, expecting 0 more.

U+3034	VERTICAL KANA REPEAT WITH VOICED SOUND MARK UPPER HALF
	* implemented as glyphs that are one-em tall and that combine with the following character to form ligated two-em glyphs for the complete repeat marks