Before that day, he had always been just an ordinary high school student.
Yes, before that day.
If only he hadn't touched that thing that day...
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If ending this curse requires having my hands covered in blood, then I am willing.
Ps: It's not self-inflicted. It's writing without an outline again. I originally wanted to indicate "the protagonist becomes black", but if I think about it carefully, when did the male protagonist become a villain? Originally I just wanted to write a short article, but it somehow got longer and longer, so I listed it separately.