'one kill a day' is a rule in the zoldyck household for the assassin kids in training. killua was given a knife when he turned six with the words 'one kill a day' inscribed on the side in Kanji. Killua also asked for a second to be made and gave one to Gon for self defense. their made out of the same material as his yoyos and weigh 20 kilograms each
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HxH headcanons!
Fanfictionjust random headcanons that i come up with and use in most of my stories.
