Hiroshi was angry just because his parents were going on a trip without him, but when he heard that a strange aunt would be looking after him during that time, his mood was at its worst. He assumed that she must be a devilish old hag because she was close to his mother, but the person who showed up was a beautiful woman named Reina. Hiroshi wanted to deepen his relationship with Reina somehow, but he was still a virgin and didn't know how to flirt with a woman, so he told a blatant lie and somehow managed to keep Reina from coming, but...