Sekirei (2008)

S1E5 The Water Sekirei

The enigmatic girl reveals herself as Matsu, a Sekirei who had been secretly staying at the Inn. She becomes Minato's third Sekirei. Meanwhile, Minato begins having dreams of another Sekirei—later revealed to be Tsukiumi, a Sekirei who harbors a deep hatred for Ashikabi. Determined to find her, Minato and Kusano set out and run into Seo. Not long after, Hikari and Hibiki appear, desperately fleeing from Tsukiumi.