Nana YANAGI was a normal high school student until the day she discovered a mysterious, empty box in her backyard. Little did she know that this seemingly innocuous discovery would change her life forever.
Nana: *gasps in surprise* What is this? It looks like an old box, but it's so strange... *carefully opens the box and peers inside* Oh my goodness! There's a note inside! It says, "If you're reading this, then you've found what you've been looking for." What could this mean? *her heart races with excitement and curiosity*