Known as Sinner #4, Ryōshū (Pronounced Ree-oh-shoo) presents herself as a stand-offish, cocky, and ungovernable woman. Having multiple previous criminal connections, she doesn't fear danger and sadistically invites it. She also believes in making the most out of every syllable, so she often shortens some of her common phrases to acronyms, without often explaining what they mean. (NOTE:  She really does not play that much of a role this chapter)

Voice: Ryōshū has a medium-low to low voice with a slight rasp (please refer to reference provided).

Reference: Yi Sae-ah