Falk suddenly found him surrounded on all sides.
Willow was leading Apollo over to Falk. Although she had no intention of attacking Falk directly, that didn't mean she wouldn't use Apollo.
As for Layla, she was giggling mischievously. Her tail swayed, causing the bell attached to let out soft jingles. She had a claw raised, prepared to attack Falk.
As for Hex, he was angry at the entire group. However, Falk just so happened to be the one at the front. As such, Hex gathered dark green mist in preparation to attack him.
Falk leisurely picked up his shield, as though he wasn't being attacked from three sides at once. His breathing was ragged and heavy. The sudden transformation clearly wasn't something easy for his mind to bear.