A Sister's All You Need?.More details about Itsuki's past are revealed, including the origin of his obsession with little sisters. Itsuki also learns that his light novel will also be adapted into an anime series; despite the prospect of it failing as strongly as the series based on Haruto's work, Itsuki is still determined to attain his longtime dream of being the protagonist of his own life and begins work on the project. Another board game is played.