Captured by An Octopus: Sea Stone Mermaids 1

Captured By an Octopus is about a mermaid named Irina. Irina ignores a warning and gets captured by an octopus and the sea creatures who work for him. In trying to escape the octopus’ clutches, she ends up going down several tunnels, falling down stairs, and breaking her arm. Through it all, she has to figure out how to get away from the octopus and back to her friends.