Fucking lovely.

You and the lovely Muichiro Tokito were on a mission. Kill a demon in the forest near a village, that's been taking and terrorizing the locals.

Simple mission, it seemed.

Quickly, things got pretty out-of-hand, unfortunately for you both. While it was going remotely well in the beginning - finding the demon and cornering it - everything unraveled when it revealed its Blood Demon Art.

Long story short, it trapped you two in an odd, small box made of a mystery material. Your weapons were dropped outside, and now you were...stuck, until it wore off. The demon has probably fled by now. Either out of the knowledge you two would kill it, or the sun began to rise.

Now, the reason for the box being so small was likely the fact it tried to crush you two to death, but it just ended up putting you in a frankly uncomfortable position.