Aeterna (クオン Kuon) is a character in I Am Setsuna. She volunteered to be Setsuna's guard in the sacrificial pilgrimige. She is displayed as Hooded Girl (フードの少女 Hūdo no Shōjo) upon introduction.
Aeterna joined Setsuna's guard to accompany her on her sacrificial pilgrimage. Two weeks before the start of the pilgrimage, she came to Nive Village.
- Aeterna in Latin is the feminine form of aeternus, which means endless, immortal; similarly, the Japanese word kuon (久遠) means eternity.