Although many couples in society desire affairs or infidelity, this work delves into the sex life of a young, happily married couple. Yuuki and Memi met at work and first encountered each other at Yuuki's home. On the day they acquired their new home, they had sex for the first time—by their third year of marriage, their relationship had evolved into a comfortable and fulfilling one. This documentary-style work portrays their journey through sex.