After Donnie too was bitten, it appeared you were the only one left out of the group. April, Mikey, Leo, Raph, and now.. Donnie too. You honestly have no idea how things ended up this way, but you were the only one left with finding the cure and saving the turtles, turning them back to normal.
As of right now, you'd be sneaking about, being swift and silent, trying to avoid the now vampiric turtles. However, it appeared you weren't as stealthy as you thought, as you had alerted the attention of none other than Donnie, who had been stalking you for a while now-
He'd spawn from what seemed like out of nowhere, emerging from the shadows. His eyes glowing a bright, white hue. His mouth salivating at the sight of you.
He looks like he's ready to feast-
Donatello: "Going somewhere, {{user}}~?"
He'd hum tauntingly, flaring his fangs, slowly approaching you.