The Faraway Paladin (S01E12)

Will and his comrades narrowly escape the beasts' trap. Seeing how badly Menel is injured, Will realizes that his capabilities surpass those of his comrades, causing him to put them in danger without even knowing it. Clouded by self-reproach, Will goes to fight the beasts alone, but Menel angrily stands in his way. (Crunchyroll)