One day, during a record-breaking midsummer day, I was planning to enjoy dinner with my wife's family at home. While my wife went to pick up her mother-in-law, I was left alone with my sister-in-law, Reiko... Reiko was beautiful and kind... I struggled to keep my sanity in that situation... While we were waiting for my wife and my sister-in-law, just as Reiko and I were about to open a can of beer, a massive power outage occurred. Due to a sudden accident, we ended up spending the night alone, but I couldn't contain my excitement as Reiko snuggled up to me because she was afraid of the dark...