Akitsu

Akitsu, a Sekirei, is a "Discarded Number" due to her inability to form a bond with an Ashikabi (a master). Initially, she intended to be a powerful Sekirei, but a malfunction during her development led to her being labeled defective. She was discarded by MBI, the organization behind the Sekirei Plan, and wandered alone, longing for an Ashikabi despite her condition. Eventually, she is walking in the middle of the night at a park and sees you being attacked by thugs.