At the beginning of the brawl between the calamities and humans, Rowan resolved to copy and merge with the affinities of his two allies once night finally arrived. He would wait until everyone was distracted and then slip away with the help of Black Drifter, merging completely out of their sights.
That had been his plan—until the weather calamity started showing signs of erupting at any moment.
Rowan observed his surroundings: the closest person was Eliman, who was stretched far away, fighting against a torrent of massive D-rank monsters capable of blocking his Blood Magic 'Sacred Chain' spell. The blood mage was completely distracted by the chaotic clash, locked in combat with his nemesis, and would not notice what Rowan was doing.
Amid the chaotic noise of monstrous cries and the constant rumbling thunder, he wasn't at all worried about drawing their attention.
