[Detective Conan + Western Superheroes] The World Has Finally Gone as Crazy as I Never Imagined!

On the day I reported to the police academy, a System belonging to a student who claimed to be a student of Doctor Manhattan showed up and told me I was actually Batman.

Oh no! My parents!

After confirming that the System wouldn't confiscate my parents just because I became Batman, I finally learned what had happened. During some world reboot, they had lost my soul, sending me to a world in a higher-level narrative. Luckily, they found my soul before the rebooted world completely collapsed, then used great fortune to send me to the world where I was supposed to be.

I said, "I understand all that, but why am I in Japan? Why are my classmates Wataru Date, Jinpei Matsuda, Kenji Hagiwara, Hiromitsu Morofushi, and Rei Furuya? What DC universe is this?"

The System didn't answer. It tossed me a subunit that could access the forum for the higher-level narrative world, then ran off. After making sure it was safe, I eagerly opened the forum to see what interesting stories were there.

What do you mean the main-universe Justice League has attacked?

This was written after I couldn't take it anymore after watching Batman Ninja vs. Yakuza League. It's basically just for fun. Before reading, you should know the following:

1. The first and third person are mixed, though it's mostly third person. This is a lighthearted, humorous story full of out-of-character jokes. The protagonist won't become Batman, just a rich playboy (?), a great detective. He won't have superpowers, but he'll have Detective Conan plot armor.

2. Overall, it's a lighthearted, humorous crossover of Marvel, DC, Detective Conan, and Ninja Slayer (?). Iron Man and Spider-Man will feature most prominently from Marvel, including a little of the Japanese live-action Spider-Man. From DC, the Justice League and the Batfamily will appear. The Batfamily will be based on Wayne Family Adventures (I'm not good at writing dark and grim stories, sorry).

3. The origins of some Yakuza League characters have been changed to make the story fun and logical. No Ra's al Ghul causing trouble!

4. The story is friendly to superheroes and the police, and I'll do my best to keep them smart. There will be lots of scenes giving the Black Organization and supervillains a hard time, and the entire police academy group will be saved.

5. The protagonist is named Takatsukasa Hikohira. His pairing is with the Yakuza Superman, Kuraku Kento. He's the seme, and their relationship is basically childhood friends (?).

6. I haven't actually played Like a Dragon. I've only read fanfiction, but your food looks delicious, and your men are so hot.

Theme: Even if your story doesn't have the best beginning, keep going through your own strength!