The Strongest Brother Lost His Memory

My older brother, my only family, lost his memory.
He had always been a fool who cared for me ever since he took me in from the temple…
Not wanting to burden a brother who no longer remembered me, I left. But in my absence, tragedy struck, and I was powerless to stop it.
So, I turned back time.
Back to the moment he lost his memory.
I couldn’t allow the same fate to unfold again. With determination, I said—
I let out a small laugh and pulled out a document I had prepared. The writing was large and clumsy, but its message was clear.
[I hereby transfer all my assets to my younger sister.]
As my stunned brother stared at the paper, I retrieved his seal from the drawer, pressed it into the ink, and placed it in his hand.
Then, with the saddest expression I could muster, I whispered—
"Stamp it. Now."
This time, I will protect you.