Ep. 1: OVA bundled with the fifth manga volume titled My Brother is a Pervert

1

This original video animation was packaged together with the fifth volume of the manga series. The release serves as a supplementary feature included with the print edition of the comic book. No additional plot details or character developments are provided in the source material regarding the content of this specific bundle. The metadata confirms only the physical association between the video release and the fifth manga installment.