セイレーン

A powerful bird monster that roams the Northern Sea. Using her seductive voice, she tempts sailors to her, and then extracts all of their semen. Due to the potential for loss of life, experienced sailors usually travel with earplugs.

Though they usually act alone, Sirens have been known to wait in groups on rocks to attack gigantic ships. With her high quality vagina and seductive voice, the Siren can easily overpower a man in ecstasy in mere moments. In trade for this pleasure, the man is milked until his death.