This is a nice sword that I whipped up myself in Blender and Paint.net. Nothing too overly complicated, just a simple, powerful sword/greatsword duo here. Based off of Future Trunks and Tapion's sword from Dragon Ball Z, obviously.

You can find the 1hand variant at the top of the stairwell after the treasure chest in Ysgramor's Tomb. Its damage is identical to Ebony weaponry and is craftable with the ebony smithing perk in the Steel Smithing section.