Utautai no Kurousagi (2018)

Morinaga, a maid who works at the Elm House. Known as the black rabbit. It seems that he is not working normally, but he is trusted by his only son, Kanomu, in the mansion. For this reason, the black rumors that have come to be seen by the people of the mansion are always running around the mansion for Kano Yumebocha ... !!