Board Thread:General Discussion/@comment-25814498-20150505201606/@comment-25814498-20160524065350

From what I gather this hatsu has two main purposes:

To store an emotion of the user to be used as a sin at a later date; for instance, the user felt extreme Wrath at a video game level they couldn't get past on monday, but instead of activating their hatsu they use Sin Card to store it in a needle. Then when they get into a fight on friday the can inject it into theirself and activate it when most useful.

Or two, to store an emotion such as Gluttony in the needle before stabbing an unexpecting opponent and turning them into a cannibalistic super weapon.

Either way I love it. It seems like it would a great compliment to the Seven Sins user.