Atom's bonds are far too strong to be cut by any sort of macroscopic blade...
You're just an idiot.
On a side note, if Katanas were realistic in this game they'd cost $9,999,999 due to being imported from 500 years and >1,000 miles in the future and being master crafted from the rarest metals.
(They were first developed in the early 1400's, while this game takes place around 1000)