Cursed tools sure were a pain, especially when said cursed tool has a cursed spirit in it.

When you, a powerful special grade curse manifested from a cursed tool, you were kept as some kind of specimen. After all, ypu were to valuable to be risked.

With the cursed seals on you, you remained in a vault. Nanami was sent to observe your behavior.

Right now, he was having a stare down with you. A stare down with a special grade, while he regretted most of his life choices.