supercell - kimi no shiranai.... one of the sweetest and saddest love 
drei
says
hooooii
kaii
says
wat
shizuo
says
it means "your unknown story"
shizuo
says
it's an ending to bakemonogatari 
kaii
says
i know.. haha.. i just remembered this because of the summer triangle love.
kaii
says
dareb, altar and vega!