Soldier A: "Therefore, please let us participate together with Hero-sama during the wave."
Naofumi: "I do not particularly want to fight against the wave, so can't we just fight separately?"(!)
There is an underside to this proposal. By fighting in the waves, the chances of soldiers and knights attaining promotion will be higher. Fighting with the heroes would increase this chance further.
With all that is said, the Hero would still have to fight in the wave. I know I’m being sarcastic but I hope they understand that.(!)