[Haruka] Is a Discounted One-way ticket the only ticket you need to board the Haruka Express?

I purchased and gotten the QR Code for the Discounted One-way ticket from KIX to Kyoto. JPY 2,200 was the cost. The instructions for the QR code usage is to scan the QR code at a white Haruka ticket machine and get a physical ticket. And show the physical ticket to the manual counter to enter the gantry.

So, with this discounted one-way ticket, do I still need an ICOCA card to pay for the "basic fare" of the journey from KIX to Kyoto station?