"Most likely the mermaids." Felix answered.
Siren's team consisted of three gorgeous mermaids, who were capable of manipulating sound to a horrific degree.
They could sing songs capable of enchantment and at the same time they could erase their opponents with dreadful soundwaves.
This was merely the tip of the iceberg in terms of their capabilities.
Meanwhile, the Spirit Foxes were breathtaking alright and could use their beauty to charm their opponents easily with the help of their charm manipulation.
However, it would be hard for them to do so against mermaids.
Firstly, mermaids enjoy owning noteworthy mental defends. Secondly, Siren's team was made entirely of females, making them more inclined to be interested in the opposite sex.
This would make it harder for the Spirit Foxes to pull a fast one on them.
As Felix expected, Kumiho's team had ended up losing the fight because of those heavy disadvantages.
***