BOX DRAWINGS LIGHT ARC DOWN AND LEFT U+256E

BlockBox Drawing
CategoryOther Symbol
UTF-80xE2 0x95 0xAE
UTF-160xFF 0xFE 0x6E 0x25
UTF-320xFF 0xFE 0x0 0x0 0x6E 0x25 0x0 0x0
HTML╮
Pythonu"\u256E"