Hallelujah – Jeff Buckley
It's painful, but he's grateful it's there.
Every time Misaki yells at him, call him a pervert, an old man, useless, hopeless, idiot. Every time he makes his excuses and flees in a panic. Every time is a little stab into Akihiko's bruised heart.
He's so used to such abuse and neglect from his parents and friends that this is nothing. It hurts, but he'll cope, if just for the moment that Misaki stutters, "I l-lo... you". It's such a small thing, but it comes across like the sweetest praise.
He loves the boy so much, he's grateful for even the littlest things.