M&M～とろける魔法と甘い呪文～

A magical ceramony gone wrong, an accident that caused Marie's body to stop growing. Now a little over ten years later Marie seeks out the one who holds the key to breaking her curse. A childhood friend named Yusuke, but with an overprotective yin-yang sorceress named Misaki who secretly has a crush on him. Breaking the curse won't be easy, just who will win in a battle between a witch of the west and a yin-yang sorceress of the east. No matter the outcome, Yusuke's peacefull days are coming to an end.

[From the translation project website]