Even Given the Worthless "Appraiser" Class, I'm Actually the Strongest 4

Book excerpt: The final installment of our secret, tender romance with a younger company president has arrived! After plenty of turns and twists, Mihane and Sakura both propose to one another and are formally engaged to be married! It’s wonderful that they’re engaged, but they still both struggle to find the time to see one another. Right after Mihane works up the courage to hand Sakura a spare key to her place, he shows up the very next day to see her!☆ Even though they dated for a long time, the engagement makes everything feel so fresh and new as they engage in all sorts of activities with many firsts! As they run on sheer bliss, does this mean that their secret has to come to an end...?!