Kaki Bage

When a teenage boy visits his Gramps at a seemingly mundane boring assisted living facility, he comes to find that they have much more in common than he thought.

Ruby Gillman, a sweet and awkward high school student, discovers she's a direct descendant of the warrior kraken queens. The kraken are sworn to protect the oceans of the world against the vain, power-hungry mermaids. Destined to inherit the throne from her commanding grandmother, Ruby must use her newfound powers to protect those she loves most.