Even though I have a girlfriend who lives with me, Himari, a female college student who lives next door, makes a surprise visit with a homemade meal saying, ``I made too much...''. Although the man refrains from doing so, he is overcome by her stern look and goes to his room. Then, Himari stands in the kitchen as if she's a girlfriend, starts washing the dishes and cleaning the kitchen, and instead of showing any signs of leaving, she just stays around more and more. Furthermore, she slowly erodes the rationality of the man who has a girlfriend with natural body touches and surprise kisses. He desperately tries to stay rational, saying, ``She'll come back,'' but Himari's sweet and dangerous temptations won't stop.