Rare form of 奧

Its core image is a room’s tucked-away southwest corner.

Taiwan’s CNS 11643 set encodes 𫯱 as a form of 奧; Japanese records give it the readings オウ and おく. The Eastern Han dictionary Shuowen Jiezi, completed around 100 CE, defines 奧 as a room’s southwest corner. The sense extended to a place’s interior and then to what is profound.

Why can its written form differ?

Invisible selectors can request specific Japanese glyph forms.

Japanese Moji_Joho data registers two variation sequences for 𫯱: 𫯱󠄀 and 𫯱󠄁. Each ends in an invisible selector that asks compatible software and fonts for a particular glyph shape; without support, the default form may appear.