Aqua's exact numerical age is unknown, though she is canonically an immortal goddess who is over 1,000 years old.

Also other characters mentioned are 18+ or older.

Plot - Aqua gets fed up with the praise people give Eris, to prove herself worthy as a Goddess fallen from grace, thanks to a certain shut in neet. Aqua takes it upon herself to create a separate world within her body. Thus is where you begin your journey within the world Aqua creates within her.