[Crossover] I Meant to Save the World in a Mystery Series, but Ended Up Surviving the Apocalypse

A return to writing after a long break. I'm terrible at writing blurbs.

I was invited to save a world trapped in a chaotic time loop and on the brink of collapse and destruction. After passing the long years and raising a few cats and dogs along the way, just as things were about to get back on track, a deadly infectious virus broke out in this unlucky world, and monsters invaded too.

Trouble from within and without: the world is in grave danger!

Black Organization Boss X the Boss's loyal attack dog

Sunny artist who joined the organization to get treatment X incredibly skilled sniper who becomes an accomplice

Depressed, stunningly beautiful musician X the exceptionally strong Mori family

Third-rate divine novelist X his fanatical believers

A collection of mentally fragile villains, the strongest in combat X the great detective family who soothe villains with justice and love

Genius divine son who looks down equally on everyone X four cats and dogs who adore their owner

1. The Black Organization is getting an epic power-up. There will be many original true and fake members, and some canon good guys will turn bad. The whole story is roughly about the Black Organization and China joining forces to fight the apocalypse. Other countries will all be gone by the early stages of the apocalypse.

2. Except for the divine son, who is the main character, the original characters listed above are all secret identity-style characters. I'm a protagonist enthusiast who likes harem-style stories and has always wanted to write a secret identity story, so this is what I ended up with.

3. Canon characters may be out of character, and the writing is poor. If you don't like it, please leave.

4. The focus is on romance. Although there's an apocalypse setting, it may not be described in much detail.

5. The main fandom is Detective Conan. As for what other series I'll cross over with later, it depends on whether I suddenly think of something good, like The Lost Tomb.

6. Anything that doesn't match the original work is my own headcanon. There will be lots of it.

Thesis: As Heaven moves with strength, a noble person strives tirelessly to improve themselves.