6화: 리키와 사사미가 사라지는 평행 세계와 쿠로의 영혼을 마주하다
Sasami is forced to believe Riki's theory that the parallel world was created by someone else's desire. After Riki suspects Rin's absence in the classroom, he later hides the current situation from Kengo. Riki tastes Sasami's stir fried beef and pepper for lunch upon returning to his dorm room. As Riki notices that Sasami is wearing a cat apron, she reveals that she had a pet black cat during childhood before moving away. Riki believes that if Sasami talked to Kengo about her current condition, she might change back to normal. The next day, Riki and Sasami reveal the truth to Kengo, only for him to suddenly vanish right in front of them. Riki and Sasami see the streets past the school gates are formless, realizing that the parallel world is fading. However, since Sasami is still a cat, Riki advises her to stay by his side. After waking up from a dream, Riki realizes that the black cat Kuro created the parallel world because it represents the last few moments of its life before it died. Riki eventually convinces Sasami to talk to Kuro's spirit as a team, which finally reveals its physical form, much to Sasami's happiness. (Source: Wikipedia)