"We're going to be your wife!" I wonder how many years have passed since that day they said those words to me. Yuna, quiet and shy. Yuna, cheerful and always smiling. They are twin girls who came to call me “Papa” and adore me after a brief exchange when they were children. One summer day, I was asked to take care of them for a while. The twins' mother, who is a cousin to me, had to go abroad on a business trip. I had not seen them for two years because I was busy with work. The two of them had become very cute and were very vulnerable, perhaps because they were at ease. I was left in a state of shock, that I've fallen to such a childish "curse", I played along with their slightly naughty feelings. "Papa, you need to release a lot of white pee, you never know what kind of negative effects you might have if you resist the curse!" [From official site]