Synopsis：When a volcanic eruption destroys his home, Haruomi Shiki's peaceful life on a small island comes crashing down. He moves in with a relative, where he meets the alluring Natsumi, Akina, and Mafuyu Orifushi sisters, and finds himself immediately drawn to them. The annual competition in their area involves all the ice cream shops, with Minmin always emerging as the winner. But this year, a new ice cream shop called 101 opens a branch in the region, proving to be a rival capable of defeating Minmin. To make matters worse, the quality of Minmin's ice cream has significantly declined since the death of their father. Can they overcome this obstacle? Only time will tell, but as Haruomi helps the sisters with their ice cream shop and indulges in their more depraved desires, he will go all out in more ways than one!