I live with my girlfriend, and her older sister is that entertainer Takashou. One night after we drank together, she passed out drunk, leaving just me and Takashou awake. When our conversation trailed off into silence, suddenly a deep kiss! Although we hadn't seen each other since then, when she went on a trip and left the house empty, I got a call from Takashou... During her trip, in that limited time, we had a bittersweet lovers' game with her sister. This is a record of those four days.
