can i holster my katana like in nioh 2 ?

[Z.E.R.T.]

Like i dont like to have it in my arm all the time can i put my sword in my holster an walk around ??

[Dizzy Ladybug]

sadly not, it will always be out when it's equipped.

[PatheticallySleepy]

You can by two handing your left hand weapon/shield. If you don't want to be running around holding that with both hands, simply two hand your left hand while it holds nothing.