Tonari ni Sumu Oshiego to Kekkon Shitai no desuga, Doushitara OK ga Morae Masu ka?

I began living by myself ever since I entered high school, and all of a sudden, my teacher Ms. Mitsuki proposed to me. Her hairstyle and clothing are different, but could it be that… she’s the woman living next door who I have a crush on!? But, how can we marry with this age gap! Even so, we began to date (tentatively)… “Pass me your keys. I’ll go...