Just imagine:
The Azure Dragon belonged to the Fishman originally, it's the Fish-Fish Fruit after all.
However it saw how pathetic of a race the Fishman became and ditched them.
Reason to believe this, the name of their kingdom!
- Ryūgū Kingdom (Dragon Palace Kingdom)
An unknown connection to dragons, very suspicious for mere fish...
Look at the statue!
If the Azure Dragon used to reside in Ryūgū Kingdom (as a guardian deity perhaps) it would make sense.
The Azure Dragon belonged to the Fishman originally, it's the Fish-Fish Fruit after all.
However it saw how pathetic of a race the Fishman became and ditched them.
Reason to believe this, the name of their kingdom!
- Ryūgū Kingdom (Dragon Palace Kingdom)
An unknown connection to dragons, very suspicious for mere fish...
Look at the statue!
If the Azure Dragon used to reside in Ryūgū Kingdom (as a guardian deity perhaps) it would make sense.