>>1598728"Bandit of the Wilderness" doesn't encompass what Risty calls herself. The closest proper thing is "Chivalrous Thief" or "Noble Bandit"
She refers to herself as a Gizoku, which is a term specifically for the Robin Hood type. Seen as a criminal by those with power, but as a servant of justice by those without.
"Bandit of the Wilderness" ends with lines like "I'm not a thief, I'm a Bandit!" which is self-contradictory.
With Angel of Enlightenment, Nanael's title is Koumyou no Tenshi. It's more of a preference, as Koumyou is at times used in reference to Amitabha, Buddha of Infinite Light. I feel that "Enlightenment" carries more ego with it, and more fitting of Nanael's arrogance