The fourth volume of the Light Novel.
- Chapter 1: And Like That, the Older Brother Decided To Run Away
- Chapter 2: He’s My Nii-san But It Doesn’t Matter if There’s Love, Right?
- Chapter 3: The Surprise Attack Comes After the Fireworks
- Chapter 4: Ayano-san Won’t Give Up
- Chapter 5: A Certain Calligraphy Club’s Seaside Training Camp
- The title of the second chapter is a parody of As Long as There's Love, It Doesn't Matter If He Is My Brother, Right?.
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