Invisible man series for the first time in 10 months! Men who drink a mysterious drink and become invisible men surrender themselves to their sexual desires, and this time they burst into the inn and do all-you-can-eat! If you look into the open-air bath, you will find a girl with big boobs! In the banquet hall, we found beautiful women in yukata! The erection rate is definitely the highest percentage in the series due to the delusion bursting with the feeling that the whole inn will be knocked down!