Skeleton Life

Yay~ Finally uploaded something after so long =w=''
I know this song has been quite some time but I've only heard it lately..so yeah.
And I'll be doing more stuff as there's going to be a one week holiday soon~ xD
P.s I'm not so sure about the meaning of this song. I heard some say that the boy is actually Rin, not Len. If someone would explain it I would really appreciate it~