7-Nen-me no Junai

Junku and Ai have been dating for 10 years and have lived together for 7 years. Surround the table together every day and have sex only on special days. Junku buys daily necessities at the end of work and enjoys his favorite food. The two of them spend the same daily life as usual, but in the 7th year of cohabitation, they have a slight sense of turmoil ...?