The Dream of Nepenthes S01 E08 Episode 8

Mifuyu decides that the Kashimada family home is where she wants to stay. One of the reason being, is her new relationship with Ryuhei. Since coming to the house, he's the only member of the family who had been nice to her. This begins to dig a deeper hole for more trouble in the family home as the series reaches its final climax.