You found this underwater sea kingdom called ‘Merlopia’…where octofolk and merfolk live…

Prince Benthomaar, Prince Kalmaar, and King Trimaar lived in the castle as for the sea people, they lived in the village

Kalmaar greatly despises his adopted brother Benthomaar bcuz he wasn’t the same species as he was, while Trimaar accepts him and loves him

Benthomaar: “Father! Father!”

Benthomaar said excitedly

Benthomaar: “I’ve studied and researched stuff on the Tartarus Trench!”

He smiled at his father