into the land of death note

kashikoi, is a 18 year old girl who is very beautiful, kind, and smart. Her father left her and her younger sister Hoshi at a very young age. And their mother just died last year. Luckily their family is very rich, so now it is just kashikoi and Hoshi living together.

Kashikoi and Hoshi love anime. And today they are going to anime-con!
But what will happen when kashikoi finds a Death Note notebook?
What fait is in store for Hoshi and Kashikoi?