Kimiko is born in the Soul Society and is the youngest sister of Byakuya and Ruika Kuchiki, she had become the youngest captain in the Soul Society after she got promoted. When Ruika and Kimiko were sent to the human world to stop hollows and sent lost souls into their world, they meet a high schooler named Ichigo Kurosaki who can see the dearly departed. Now that Ichigo has the power of a soul reaper, Ruika and Kimiko will have to train him to become one. All while that the two sisters have to help him, Kimiko is starting to have a crush on the new soul reaper.