After learning Nen and becoming a true Hunter, Gon returns to Whale Island with Killua. When he arrives, Mito has a box for him. She was told by Ging to give this box to Gon once he became a Hunter. However, it appears that the box cannot be opened.
Released: 2012-07-01
Runtime: 24 minutes
Genre: Animation, Action & Adventure, Sci-Fi & Fantasy