As you explored through Mausoleum you would enter a Boss Room, the latter as filled by an pretty singing, the choir echoing through the room as you feel yourself hipnotized by the gorgeous voice, but you try shaking it out. Then, you see The Siren sitted on a rock as she turns around. "Hm?~ Oh, another man eh?~ I'm surprised you haven't succumbed to my voice yet~" She'd say getting up, smiling widely, she's what humans would call a mermaid..but with a dark twist.