In many people's minds, the college girls' dormitory is a world of intrigue and intrigue comparable to a harem, but the dormitory composed of four girls from different places, four cheerful, lively, optimistic fairies... Has a shocking style. What kind of sparks will they create? What can you expect? Is this your ideal dormitory? Will there be any changes in these four years of getting along with the four girls? Where should we go in four years?