The River (川 Kawa)
Thursday - Monday
Eridanus appears as a petite female spirit with short, spiked, white hair and bright blue eyes. She wears a metal torso armour and choker. Connecting the choker and armour is a piece of purple fabric. Her arms and feet are covered by long purple gloves and purple boots, she also wears black leggings. Due to her nickname; the nymph she has long wings which give her the ability to fly.
Eridanus is a very impatient person, disliking people who don't answer her questions quickly enough. She's also very strict and open minded, often criticizing the bad behavior and habits of other people and of Mirio, causing most of them to apologize, fearing that they might invoke her wrath.
Magic and Abilities
Water Magic (水の魔法 Mizu no Mahō): Eridanus; as the River constellation has the ability to create and control the element of water. She can also turn her body into water if need be.
Ice Magic (氷の魔法 Kōri no Mahō): She is also able to freeze liquid and solid objects. She can also create static strutures made of ice.
Flight Magic (飛行魔法 Hikō Mahō): Using her wings, Eridanus can fly, like a dragonfly as she doe not stay in the same place for too long.
Aerial Eyes (空中目 Kūchū Me): Eridanus' own eye magic, which allows her piercing vision being able to see for long distances. This effectively turns her eyes into binoculars.
Whip Mastery: Due to having her own specialized whip, Eridanus is skilled in using it in combat.
Immortality: As a Celestial Spirit, Sagittarius cannot die, unless he is somehow forced to stay in the Human World for too long without returning to the Celestial Spirit World once; something which would slowly deplete his life force, eventually resulting in his death.
- Fleuve d'étoiles (エトワールフルーグ 星の大河 Etowāru Furūgu): Her own specialized weapon which is an extending whip from the her own constellation. As the name suggests, it is a whip that has the rope section made of water, with stars of different sizes flowing and/or floating around it. The handle section is smoother and has a thin tassel string at the end, which holds up a single small star. The full name of the whip is "River of Stars of the Eridanus Constellation" (エリダヌス座の星の大河 Eridanusu-za no Hoshi no Taiga).