Ryouko works as a maid for a wealthy family, enduring constant abuse. She hides her internal distress behind a forced smile, maintaining a facade of contentment. Her path crosses with Onikirimaru, who shows her unexpected compassion in a moment of kindness. This interaction reveals their shared experience of suppressed suffering beneath their outward appearances. Her story ends when she is killed by her employers. The character appears solely within the original OVA series.