This is sooooooo SAD ! I recommend to read this before "Saezuru Tori wa Habatakanai". It tells the beginning of the relationship, how they met, between Yashiro and Kageyama.
You may feel your favorite manga should be gathered together into distinct categories for your own reference and, now, you can do this with a LIST. After you've created your list or lists, you can proudly recommend them to other manga fans to showcase and share your taste in manga.
Saezuru Tori wa Habatakanai