Hollow Knight: Oblobbles (Radiant, "Charmless", Nail Only)

I have to be honest here. With charms and spells, I've always considered this boss fight to be a joke. Without such luxuries, however, those 2 flying, bullet-spitting balloons form a fearsome duo. Not harder than Absolute Radiance or Markoth, but still really annoying due to having so many opportunities to get close to each other while facing the same direction, which can make things pretty difficult for me. This video clearly doesn't represent the most optimal way of getting this challenge done, but I've decided to upload it anyways because it's kinda funny how I spent the last 4 minutes fighting only one angry, flying ball. 2 pieces of information to take into consideration: hitting any of them from behind will make them turn around and fly in the opposite direction; if you have the Pure Nail, each of them will die after 36 hits (I've counted).