Ichisumi seems like a quiet and reserved mare, though under her exterior there is a high trained assassin just waiting for orders. She has traveled to the Kawanii lands with two "brothers", Ronin and Kisho. She took up residence with the two years ago and has traveled with them ever since.
Unknown to Ichisumi, the brother Ronin has been smitten with her for ages. He is the perfect gentleman when around Ichisumi, but he has never revealed his secret.
After one of Kisho's adventures, he returns to find his brother smitten with their traveling companion. Out to show up his brother, he began to woo Ichisumi. After being showered with gifts, affection, and promises to give her the world, Ichisumi fell in love with Kisho.
They are now lifemates and inseparable. Ichisumi plays the part of the quiet partner, but her ever watchful eyes are always on her mate. She may look meek and fragile, but she dares anyone to threaten harm to Kisho.