138 | : Request X And X Wish

The episode's title refers to the transactional nature of the entity known as , who resides within Alluka:

Desperate to heal Gon after his near-fatal battle with Pitou, Killua returns to the Zoldyck estate to enlist Alluka's help. 138 : Request x and x Wish

The "cost" of a wish is not paid by the wisher, but by the next person who encounters Alluka. The greater the previous wish, the more difficult the subsequent requests become. If four requests are denied in a row, the person and their loved ones die—sometimes numbering in the dozens. Key Narrative Developments The episode's title refers to the transactional nature