As character names:

U+30C3 KATAKANA LETTER SMALL TU character (ッ)

As raw characters:

ッ

As a string of HTML entities:

ッ

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 131, hex 0x83, octal \203, binary 10000011
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 131, hex 0x83, octal \203, binary 10000011
This is continuation byte 2, expecting 0 more.

U+30C3	KATAKANA LETTER SMALL TU
	= SMALL TSU