From end of 16th episode to the end of series I felt so depressed. Depression ceased after long two months. Anime I definitely don't want to watch ever again in my life.
When Mai lost her brother and then her boyfriend it was heartbreaking. The happy end was forced here. Alyssa's death in Miyu's arms.
At the end I cried like a kid. Literally.
When Sakamoto Mio was unable to fly a striker.