Hitoe Uemura

Even though they are from different schools, Hitoe eventually becomes friends with Ruuko and Yuzuki, fulfilling her wish.

After losing three battles, her wish becomes tainted. She loses all memories of her friendship with Ruuko and Yuzuki, and WIXOSS. Hitoe becomes unable to make friends and receives painful shocks whenever someone with any kind of positive affections touches her.

She is actually the only one in the series that naturally overcomes the wish-reversal with the force of will, making it clear that there are actual flaws in the “selector system.”