Can a Melancholy Girl Be Saved?

"I used to be a boy."

The new transfer student always looked gloomy. When someone confessed to her, she said this.

"Do you believe me?"

No one could answer, stunned into silence.

Except for one person...

"I believe you!"

Someone answered, driven by kindness.

And then their conversation went like this...

"Say, Uehara, you've definitely thought about doing that sort of thing with me, right?"

"Please don't say things like that, Nishidera!"

P.S. A short story with a bit of a Japanese light novel feel, maybe.