She meets men in the house who similarly cannot remember their pasts, and the group is forced to partake in the black butterfly hunt to gather the kaleidoscope fragments the monsters possess.

[3] Black Butterfly and Ashen Hawk were developed by Otomate,[4] and were directed by Momoko Terashima and written by Toono Chiharu and Yuriji.

[9][10] The games were originally published in Japan by Idea Factory for PlayStation Vita: Black Butterfly on January 29, 2015, and Ashen Hawk on June 29, 2016.

The North American physical releases of Black Butterfly and Ashen Hawk also include a set of character cards.

[18] Frontier Works released the ending theme to Black Butterfly as a single on January 28, 2015,[10] and the full soundtrack albums for the two games on November 30, 2016.