Also known as: Rien, 里恩, リアン, 뤼엔, lcbRien
Main antagonist of Limbus Company's Canto 9 known as the Nursefather of the Index.
Cares for Sora (Project Moon) and, in the past, Ryoshu (Project Moon).
His similarity to Roland (Project Moon) is no coincidence; it's a product of the prescripts given to him.