If you see this manga at first glance, you probably won't see the appeal. That's what I first thought until I saw that it was Hagio Moto's work. If you are an otaku, please read at least one of her works.
Although it was a one shot, it was very outstanding and touching. I never knew just a few pages of manga could affect me like that. After reading it for the first time, go back and read it again. Then it would make more sense, and you would see what the story was all about.
Please read this manga. I recommend this to