A lonely wife is all alone in her house the day after she got married. Has she been dumped? Nope, but she has to wait for her beloved one until he comes home as he doesn't have the keys. How can she kill time? Will there be an unwanted guest aka a new character?

Tsukasa puts her hair up every evening before bed. But, as she moves a lot while sleeping, they come loose almost instantly. Also, she is a sleepwalker and always goes to drink water in the middle of the night while half-asleep and on her way back, she usually tries to grab Nasa's covers and then fall asleep in her futon. This is her usual sleepwalker routine. But not this time, as she accidentally goes into Nasa's bed instead of her futon, and so, our poor boy can't catch any z's with wifey so close.