How Did We Do It In The Past!?

They need to do it, but they don't know how. A couple who have been together for many years and are considering marriage are faced with the obstacle of a "sexless" relationship. Daiya and Rino are a close couple who have been together for seven years and living together for five. They laugh every day, share the same values, and are a perfect match. They've already become like family to each other. It's about time they started thinking about marriage. But actually, they've been sexless for two years... Busy work schedules and missing opportunities have resulted in the mood never being right... "How did we even do it before?" Will the two of them do it or not? Will they get married while remaining sexless or not?

(Source: Nihon Bungeisha, translated)