Tokyo Ghoul, I Was Symbiotically Symbiotic with Venom!

I am a good young man in the 21st century, but I was accidentally transported through time due to a heavy blow from a large truck. Then I actually traveled to the world of Tokyo foodies and became the protagonist's younger brother. The point is, I don't watch this anime either. The most annoying thing is that I didn't realize he was the protagonist until he was hit by a steel bar. Can anyone tell me what to do! What could be worse than this? Of course, how about being possessed by a symbiote from nowhere. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.