After a tragic accident, Kageyama loses his eyesight. What will happen to the freak duo? Will they still be able to play volleyball together and improve their quick? Or will everything that could possibly go wrong, go wrong?

What if one day you received a letter from your future self? The letter revealed all of the regrets you are going to make in your third year of school...and how to stop them from happening. There is one goal through all of it, don't loose Bokuto Koutarou. [Inspired by the manga/anime "Orange".]