Ecloes

Ecloes is a 2004 platform video game developed by Square Enix and Sushi Software, published by Nintendo for the Game Boy Advance.

Gameplay
The player must chose between the two protagonists (Gemini and Cadlina) and save Pjerin Witchcarft school from the bad guys...

Plot
211th century,

In a RPG-like world

At Pjerin Witchcarft school,

Senior student Gemini Izzusu is abducted by blackmagic using creatures named Ksanson but is soon rescued by freshman student Cadlina who is revealed to be a magical creature known as Ecloes who fight against Ksansons...

The two must eliminate all Ksansons and prevent their evil schemes to take over the world...