Ck35, like the one I had without cab, does not have a step on the right side. However they do have the mounting to add one. I asked my dealer and he had a new one in stock and just gave it to me...even though my NX has a step on right side it's safer to exit the left side due to all the levers and pedals that could accidently be moved by clothing, big feet or fat butts...I never exit my NX on the right with it running and seldom when it's not. To me the biggest practical advantage to even having a door on the right for any of the tractors is, with seat switch modified, is so you can open the door and back the tractor slowly onto the backhoe by kneeling down outside to watch..
Maybe Kioti thinking is no step deters one from exiting that side except in emergency or extenuating circumstances. ...and saves $$$