One day, the highschooler Takada Mitsuru visited the salary-man Atsutaka Satou while in her uniform asking for help. Atsutaka, who was now supposed to live together with Mitsuru, became lonelier and lonelier as his daily life without seeing Mitsuru's face continued, even though they lived together... Then one day, when Atsutaka got drunk and came home, he saw Mitsuru wearing just a towel as she got out of the bath.