ohemgee! HELP ME PLS.

[ohemgee_itsme]

Ok so ummmm...a few years ago I read a fanfic for an anime. Annnd...I don't remember the anime -.-;
BUTTTT
There was picture!!! I remember what it looks like!!!!

Ok so, he is tall and has long-ish black hair!!!
He also wears a blue kimono anddd HAS A HUMONGOUS 20 FOOT LONG SWORD!!!

I don't think it's 20 feet exactly, but it's huge!!!!
and ummm...only he can pick it up....
Buttt I REALLY want to know this anime

If anyone knows please tell meee!!!!!

THX!