My little sister, to my chagrin, is more popular and capable than I am. She works at a top-notch company, has been dating her boyfriend for years, and they're on the verge of getting married. Unlike me, a loser who can't get ahead, she's a winner in the real world. It's frustrating and pitiful, but I can't help but admire her a little... My sister was downcast and said, 'Big brother... I've been dumped...' So I decided to cheer her up with a hot spring trip. While accompanying my sister's drunkenness, she suddenly came on to me...
