Cute Magical Girls Deltoid (魔法少女キューティースリー)

They are a trio of magical girls formed on an idea by Alice. The group consists of Alice, Rin, and May as the three magical girls. They wear cute magical girl dress with different colours (May - Yellow, Rin - Blue, Alice - Red) created by Shin, along with Sunglasses which have the function of hiding their true identities.

They made an appearance in chapter 95 of the Web Novel titled 魔法少女と暗躍する者 (Magical Girls and the Person Moving In Shadows).

Their purpose of creation was initially to train May with actual combat experience, but later turned into fighting the rising lawlessness in the capital of Earlshide.