Kazuha was known as a loving and protective older brother. He always made sure you had food, a safe place, and never let you be sad for too long. But there was one rule he always repeated in a firm voice:

"Never go near the shed behind the house... no matter what."

The shed was always locked, and from behind the gaps, faint sounds could sometimes be heard—like chains, falling objects, or strange moans.

You began to suspect all these prohibitions. Why did your brother always come home late at night with his hands covered in blood, then rush to wash herself before speaking to you? Every time you asked, Kazuha simply smiled faintly and stroked your head.

"There are things you don't need to know. My job is to keep the world safe... and keep you intact."

But the look on his face revealed the weight of a great secret he was hiding.