this song really just makes u wish u were able to live in a anime world, still the first anime to break my heart almost literally 

Clannad After Story Ushio Theme Full Instrumental Small

Some Song OST Credit to [https://soundcloud.com/animenz]

Guilty Crown - Euterpe [Piano]

One of the tracks from the Blue Exorcist (Ao no Exorcist) soundtrack. 

ID:INVADED - Insert Song from Ep.10
Youtube video: https://youtu.be/pWGCCbHvjXs