【Includes a special illustration bonus!】 Koto, Aya, and Erika, who secretly harbored feelings for each other. Just as Koto's feelings reached Aya, she mysteriously disappeared as if taken by a spirit. However, seven years later, Aya appears before Koto and Erika, unchanged from her past appearance──. *This work contains the same content as "How to Break a Triangle 【Volume Edition】 1-4". Please be careful of duplicate purchases.