𛀣

𛀣 U+1B023, 𛀣 HENTAIGANA LETTER KI-1 ← 𛀢 [U+1B022] Kana Supplement 𛀤 → [U+1B024]

From man'yōgana kanji 㐂 (a variant of 喜), written in cursive style.

𛀣 (romaji ki)

1. (obsolete) The hentaigana syllable that is used to represent ki in old Japanese text.

It can also be added with dakuten, becoming 𛀣゙, to represent gi.