Also known as: 古戸ヱリカ, 古户绘梨花
Umineko No Naku Koro Ni character. A blue-haired girl estimated to be around Jessica's age, she is characterized as being highly intelligent and possessing an excellent memory. She acts very polite in public, and shows an extreme interest in puzzles and mysteries. However, she is actually sadistic and ruthlessly cunning, calling herself an "intellectual rapist".
She's Bernkastel's piece.