Eiro looked at the others after his explanation. Knowing about this, things seemed a lot more... possible. If the Devil really had such weaknesses, becoming influenced by the same sins that he was supposed to control, then it would definitely be possible for them to face him. However, Eiro wanted to make one thing clear, "Even if that is the case, the Devil isn't someone that can be underestimated. If possible, we should still act like he doesn't have that weakness."
"...then why did you tell us? Wasn't that supposed to make us feel more confident about this?" Krog wondered, and Eiro looked at him with a slight smile, "In this case... 'we' really just means 'you'."