* Based on the D.C.S.G. game / manga.
Two years have passed on the peaceful island of Hatsune. One evening a mysterious girl appears on Asakura Jun'ichi's doorstep, looking for Jun'ichi's grandmother, who only recently died. Since she has nowhere to go, Jun'ichi decides to take her in. When Asakura Nemu, Jun'ichi's non-blood-related sister, returns after two years of study at…