Gae Bolg

Ironic, because Gae Bolg is actually a spear in Celtic Mythology

Gae Bolg is based off of three different katanas

Saya's katana from Blood+
Naoto's katana from DOGS: Bullets and Carnage
And the Three Girl Rhumba from No More Heroes

and theres also some implements of a combat knife in the, hence the... ridges? If thats what you call them

This is Leto's sword... that she has no idea how to use XD

...
and junk