looks like you need to find out who killed your dad to find the other one
start by booking a flight to japan and touring all of the country's high schools
you'll find it eventually
Agreed, and maybe you'll find a uniform that'll help you in your search.
Here's a hoodie of Senketsu lol
I'm on it! http://www.storenvy.com/products/4107896-kill-la-kill-scissor-blade
Both the red and the purple scissor blade are on the same site.