Ryuu, who works in a convenience store, recently moved in to an apartment which is rumoured to have a strange history, especially with stories coming from the second floor where he and his neighbour, Kei, lived at. Instead of being interested with the strange things happening in the building, Ryuu is much more interested with his neighbour instead...and ever since he moved in, his neighbour has been doing strange things to him and Ryuu is desperately trying to find out what is going on!