Light Yagami and Jane Saitō have been friends since childhood, and now go to university together.
After the two have a study date, and an unplanned 'sleepover', Ryuk points out something suspicious about Jane, and Light will have to figure out what to do about it, already having the stress of two killers who want to 'help' with Kira and his cause, even if it means being killed by Kira himself.
Will the two stay friends and become allies? Or will their relationship be torn apart, even if some romantic feelings are hiding beneath the skin of each killer?