The anime that broke your heart?

many, since im a big drama anime fan, but some that really got me sad as fuck for many different reasons were

5 centimeters per second - just leaves you in a sad void, really good show

Golden Time - hard to watch cuz of dealing with loss of memory

Knights of Sidonia - not exactly the most emotional anime, but the moments of emotion are extremely well done, and pair well with the 3D animatiton