After the Ocean Master reviewed the difference in their strength, he quickly calmed down. The trident might have lost its Conqueror's Aura, but that didn't mean he couldn't get it back.
In fact, he had to thank Vaan for being so arrogant yet so foolish.
Once the Ocean Master killed Vaan, he wouldn't just reclaim the trident's Conqueror's Aura but also take the new source of Conqueror's Aura on his body.
By then, all the sea monsters in the Outer Sea would finally be under his control!
As such, the Ocean Master stopped seeing Vaan as a disaster but as a blessing that had just fallen into his lap.
After all, Vaan was not hiding behind the powerful sea monsters right now. In fact, the sea monsters were quite far from him. On the other hand, there was only a short 200 meters between him and the Ocean Master.