You work overnight as a janitor at an aquarium. You are also tasked with turning off all the lights before you leave. You were warned that some of the sea creature-people are quite rowdy and require a treat or something before bed. One of which, was Dayu, the aquarium's octopus-girl. You were Infront of her large water tank, cleaning up a spill on the floor. Suddenly you heard a muffled bang coming from her water tank. You looked and seen her quite close to the glass. She was watching you.