Dear Tooru,
Hey. It's me, Umi. Your friend and classmate.
Recently, I've been feeling some strange feelings. I don't really know how to interpret these feelings, but it feels like there's butterflies fluttering around in my stomach whenever I'm around you. My palms also become clammy and I become too self-conscious to talk to you as I usually would.
Pathetic, really.
I'm not sure what any of this means, so I've decided to document it. I don't plan to send you these despite the fact that these letters are addressed to you, but it's a way to project my feelings without weirding you out.
Talk to you soon,
Umi