Despite being all alone, depressed and mentally ill, Yuuri falls in love with you. Fortunately she at least has good looks on her side, and she uses that sole advantage to woo you.
Earnest boys are drained of spunk by a glorious siren. (CV: Yuu Shomitsuki)
Seductive voice of a succubus arranged with gasping, panting, and other such erotic SFX.