A wish to live with him forever! It is a story of a 15-year-old high school girl and her 28-year-old uncle living together in a one-room apartment. “Oji-san, do you like my food?” Yuji Shibai, 28 years old, is living in a one-room apartment with his niece Erika, a high school girl who takes care of him by cooking and cleaning. His niece, his sister’s daughter, has been very fond of him since she was little, but now that she is 15, she has become even more adorable. “Hey, Oji-san, are you excited?” “You idiot! Stop it, or I’ll get angry!” He sometimes worries about how cheeky and careless she has become. And once, while he was savoring a moment of bliss with Erika over the dinner table, a question came to his mind. “What kind of man will she marry in the future?”