Ep. 8: Kyosuke learns Ruri's guidebook aims to reconcile him and Kirino before their breakup.

After Kyosuke reveals his new relationship with Ruri to Kirino, he is surprised by her lack of complaint. During their first date, Ruri wears a custom cosplay and shares her preferences, which are recorded in a guidebook she created to achieve her goal of reconciling Kyosuke and Kirino. Although he does not fully understand her intentions, Kyosuke agrees to assist her. They spend the remaining days of summer break visiting each other's homes, where Kyosuke meets Ruri's younger sisters. As the break concludes, they attend a festival together. With school resuming soon, Kyosuke promises to cherish their summer memories, unaware that Ruri is preparing to execute the final step of her plan: breaking up with him.

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