[Western Crossover] Would a Sword-Cultivating Merman Dream of Batman?

Unknown wormholes have appeared all over the world.

A girl falls out of a wormhole, while unknown ferocious beasts secretly lurk in the cities.

All kinds of demons and beasts from the Classic of Mountains and Seas have come to this world.

[One Big Happy Family]

[Oracle]: [File]

[Red Hood]: A mermaid?

[Robin]: Obviously, you fool Todd.

[Red Hood]: I refuse to believe you didn't mistake her for a mermaid.

[Robin]: TT

[Nightwing]: Wow, a new member?

[Red Robin]: Welcome.

Both sides respect each other's ways of doing things. Neither puts the other down to make themselves look good.

Theme: At first glance, nothing else compares to you