Songs of Araiah

A freeware Kinetic Novel released by Bishojo Games in 2008, Songs of Araiah tells the story of Jason Leraines as he runs away on his 17th birthday in an act of defiance against the Hanasians - the ruling body over the country. He goes to a mansion that is rumored to have a vampire in it that will grant anyone a wish if they let her suck their blood. When Jason meets the vampire, Melissa Vonstrauft, and tells her his wish - to live forever - she sets the price for it at being her servant for the remainder of his life. Given the alternative is a swift death, Jason accepts these terms, and becomes Melissa's servant.

It can be downloaded from here.

Tropes used in Songs of Araiah include:

• Berserk Button: Never say anything that would make Melissa feel old.
• Immortality: Melissa's explanation of it is that the closest one can get to immortality is effectively Healing Factor-type immortality. Anything can maim you (and you'll feel it), but all wounds will heal in a matter of seconds. Eating, breathing, and sleeping aren't needed (save to recover from mental fatigue).
  • Jason gets this immortality mere seconds after Melissa swaps blood with him (a side effect of receiving it is sharp, severe pain). She defers the explanation until after Jason starts connecting the dots and figuring out Melissa is NOT a vampire, which happens to be after she kicks him hard to wake him up. Up until the kick, he actually thought he was dead.
• Lethal Chef: Melissa, who has also been stuck effectively eating her own cooking (which would be a problem if not for the immortality thing). When Jason first cooks and (by accident) makes something clearly inedible, she eats it without any hesitation or complaint, noting it's not bad.