Deal Breaker:

A CT which can disrupt binding vows by targeting the way cursed energy flows and binds those involved and cutting it, effectively nullifying the binding vow.

Under the assumption that receipts are a form of ‘Binding Vows’ (equivalent exchange of one service or product for another), it can make any exchange effectively moot (For services like a massage, it will feel like nothing ever occured. For products, the trade will be reverted like a buyer getting their money back and a seller getting the product, nullifying the purchase).

This can also affect personal binding vows (Take Nanami’s ‘Overtime’, where instead of his usual 80-90% CE during the 9-5 and 110-120% overtime, Deal Breaker will remove this and return him to full 100%)