Tsukiumi is one of the main heroine's in the Anime / Manga Sekirei. Tsukiumi's has powes that are water based. Tsukiumi contacts the main protagonist, Sahashi Minato through a dream saying that she would kill him. When the two finally meet however she is persuaded into becoming his Sekirei guardian. She refers to herself as Minato's 'legal wife' and is very possessive of him. Tsukiumi had a one-sided rivalry with Homura, whom Tsukiumi considers her rival (she was apparently defeated by Homura on their very first confrontation; he then advised Tsukiumi to find her Ashikabi instead of wasting time fighting, and Tsukiumi has been looking forward to settling the score ever since). Tsukiumi once confided to Miya Asama that she still wants to be the strongest, but it is so she can be with Minato