This is Hikaru's Main weapon.

Galahad, it stands in a class of it's own combining the strength of a greatsword and reach of a Spear.
Backstory wise this weapon was handed down to Hikaru by his father. Hikaru is also allowed to channel his Spirit fire through Galahad to deal more damage.

This is another awesome render by icon~alexanderkitsune~:
I like, squealed when I saw this and I just couldn't believe the epicness in which I was looking at thanks so much dude!