Sin Weapon · The Primal Hunter · Wiki

"A type of cursed weapon based on sin. Or perhaps it is more accurate to say that it is a weapon created based on a concept rather than a cursed weapon created to fulfill a specific goal.”

—Casper, to Jake Thayne

It's a growth curse, not a weapon per-se. The weapon itself is merely the medium in which it is stored, and if the medium breaks, the curse itself will merely disperse as it is part of a larger concept. Well, that or you can transfer it to a new medium. And to call it a growth curse should kind of set off some red flags… Sin weapons are dangerous. One does not normally use Sin curses in weapons due to it having a user but rather infused in items like altars or other ritualistic items. Sometimes maybe sacrificial daggers… but not something you use on the daily. It’s just too dangerous.

Any cursed weapon affects the user, but Sin weapons even more so as you are more connected to them. You make them grow and infuse them with new Records, meaning you are an instrument of the curse, and the Records of the curse also begin to affect you. That is why it is generally fine if you only use them sparingly, like during a ritual. The man you took the blade from had gained his class merely due to the blade and had undoubtedly been affected mentally too as time went on due to continued exposure. That is why they are dangerous… the curse will slowly begin to affect you more and more, and a blade based on Hunger holds a very vast concept. It can be the Hunger for anything.

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