第 20 集: 桃樹採摘活動中，Touka 邂逅了 Butterfly Sisters，並進入了一個異次元空間。

20

The three Butterfly Sisters host a peach picking event where the participants can pick and eat as many peaches as they like, but one third of the harvest must be given back to the Butterfly Sisters in return. While out in the orchard Touka runs into the Butterfly Sisters and gets trapped in a strange dimension with them. There, he finds out the truth of his existence. (Source: Wikipedia)