This might just be a stupid question, but I've googled and searched through GameFAQs and just can't seem to figure it out.
I finished No More Heroes with the Mk-II katana, and now I want to go to the "real" ending, which apparently requires me to have all 3 katana. I didn't even know there was a third one until I couldn't access the "real ending."
So I gave Ryu's katana to Naomi, but she won't sell me a new sword.
The question: how long do I have to wait, or what do I have to do, to be able to buy the new katana after becoming rank 1?