Who on Earth Sent Me Valentine’s Chocolate?!

On White Day, I received a chocolate that looked like a confession chocolate no matter how I looked at it.

I found it in my schoolbag, so I had no idea who had given it to me.

I asked my upperclassman, my twin neighbors, my childhood friend, and my friends, but they all said they didn't know.

How strange. Who could have given me the chocolate?

As I investigated, I realized there was more to this than met the eye.

(P.S. This book uses an abstract writing style unique to the world of anime and manga, so please keep that in mind.)