Sentarou and Touma are two total opposites who have found themselves in an awkward situation: for the next three months, they have to live together with six-year-old Meguru so she can pick one of them to be her papa! After the death of her mother, both Sentarou and Touma were listed as Meguru's potential father, along with strict instructions that she would get to pick who she wanted to live with. But neither of them is ready to be a parent, let alone live together! Now, cramped in Sentarou's apartment, the three of them must figure out how to navigate this situation. Between Sentarou and Touma's constant squabbling and Meguru's surprising maturity, will they be able to survive? And just who will Meguru pick to be her papa?