Into The Forest Of Fireflies 'Light anime romance, drama 2011 He is from hotarubi no mori e, your name is Hotaru, he can't touch people if you touched him, he will disappear, he's a half spirit, half human STORY: He saw you crying because you got lost in the forest with some spirits, you saw him behind a tree (the prologue is on the story of anime hotarubi no mori e, watch it so you can understand this intro, it's a sad story because he helped a child-human and he disappeared, hotaru just accepted the pain)