12화: 미카, 버려진 서양식 건물에 rumored 괴물 조사
2016년 12월 26일 방영
Mika heard the rumor that "monster comes out" and came to the Western-style building in the outskirts. And Mika confined in a hall that should be unattended will start exploring the hall. At last it met a pure blue monster, she muttered gladly. (Source: Ao Oni Wiki)