Yes, you actually can. However, you have to go through a couple of notable hoops to do this. For one, he is only available as an enemy in Persona 5 Royal. You will need that particular version of the game to fight him. In addition, Yu Narukami is a DLC boss battle in Persona 5 Royal. You will need to have that particular DLC purchased and downloaded to fight him. He is a mid-level boss fight that you will need to grind to be able to defeat. Being that he is an optional challenge boss, it will not be an easy fight.