Унеси меня на Луну: Униформа

In the Arisugawa family, Tsukasa and Nasa are enjoying their first year of marriage. Although the two did have their fateful encounter, they did not have the typical high school experience of falling in love and uniform dating; instead, Tsukasa put on a uniform with the help of Aya. Nasa couldn't contain his excitement when he saw Tsukasa wearing a uniformed secretary. What dramatic event will befall the two individuals? (Source: Bilibili)