A group of G. Lunariam who came to the sea of ​​the earth. I thought, "Special training is just a vacation trip !?", and it was a special training camp in hell by the chief of the moon wolf "Hekaterina" ...! "Jugoya Tsukimi & Maria" sisters appear in front of Katsuma who tries to find out Hekaterina's weaknesses. When Maria wants a reward for her cooperation so far, she wants to have a sweet and sour experience in the shower room, seeking Katsuma violently and indecently.