RED STRING
I want him free from his guilt.
"I didn't want to waste our parents' sacrifice, so I returned to you with all of my remaining strength, but something happened. I fell to the ground unexpectedly, and when I awoke, I was already in a different place. I was no longer in Preousia, someone brought me to Ebonvale. Then I became aware of the changes in my body. I felt stronger than before, and I gained unnatural abilities like speed and healing. Not only that... I felt a strong desire for blood, and I realized at that moment that I was no longer the same person I had been.