Code point
U+B81B
Glyph appearance depends on your fonts.
U+B81B
LoU+B81B HANGUL SYLLABLE RES is a Unicode 16.0.0 character in the Other Letter category. It belongs to the Hangul Syllables block.
Choose the representation you need, then copy its value.
U+B81B
47131
렛
렛
EB A0 9B
B81B
0000B81B
%EB%A0%9B
\uB81B
\uB81B
\uB81B
\B81B