6 decades books

Yasuda Aki, on the day of his graduation, grew his courage to finally confess to his crush, Hidaka Miko. They have been friends since the their first year in high school, with Aki having always crushed over Miko since. They exchanged confessions and began dating. Whilst attending university, they now live together in a dormitory. However, for Aki, even after having confessed, he''''s still head over heels for his adorable girlfriend. And perhaps, she feels the same way as him?