[DeepL Translation - needs review] Introduction to Volume 1: Kuuma, a male student struggling to find a job, is suddenly transported to another world. There, he is taken to a female prison, Kaikoku Castle, where he fuses with Kraken, a demonic beast, the supreme ruler of the sea, and gains the immense unusual ability of squid. Entrusted with the rescue of Princess Zeina, who was condemned to death by a conspiracy, Kuma sneaks into Kaijokjo as a prison guard, but a group of unique female pris...
