The term "repack" in the title "Little Sister Netori My Heart and Body Belongs Repack" refers to a revised or re-released version of the series. In the context of anime and manga, "repacks" often include additional content, revised storylines, or updated artwork.
Little Sister Netori ~My heart and body belongs to my Onii-chan~ | vndb. The Visual Novel Database little sister netori my heart and body belongs repack