Konzen-seidashi: Mijukuna koshitsuki

Original title: 婚前生だし 未熟な腰つき

Toyama, a former teacher, and his student Aoi have been secretly dating since their school days. Now that she has graduated, she has a strong desire to marry Toyama. In front of Toyama, she can be bold and willing to do anything for him. She tries to inspire Toyama with her immature techniques, but....