I write a diary in anime/manga crossovers

Hello everyone, my name is Ren Amamiya. This is a very abrupt self-introduction, in fact, I think so myself.
Actually, after learning my name, I had a bad feeling. But thankfully, I didn't find either Shido Masayoshi or Akechi Goro.
However, when I found out that the high school I was going to attend was called Teitan High School, I knew I was doomed.
I thought I'd escaped the traitor, but it turns out I still couldn't escape death.
Then I did some further investigation and learned even more information that really got to my heart's breaking.
I discovered Shinomiya, who is on par with Suzuki, and Sanzenin, who surpasses both Suzuki and Shinomiya.
[But that's not the point. It's just that Teitan High School makes me want to write in my diary.]
The boy put down his pen and looked at the prize pool.
Naruto, Bleach, One Piece, Katekyo Hitman Reborn!, Negima! Magister Negi Magi, A Certain Magical Index, Persona, Demon Slayer, Marvel, Genshin Impact, Fate/stay night, DxD, Daoist Mystery, Lord of Mysteries...
“I can accept anyone except for the strange and mysterious immortals.”