The mermaids who were used for experimental research escaped in a hurry and entered the normal human world, where they were saved and relied on physically and mentally.
The human princess was afraid of forming a bond that was difficult to break, but she was willing to be bound to a mermaid after she got a mermaid and threw herself into a trap.
The female protagonist is a slightly strong queen, while the male protagonist is an arrogant and loyal dog. This is my first time writing, please kindly point out any shortcomings.