RBK-019 Drowning in alcohol, a decrepit mansion belonging to an old man reeking of aging. In her hazy consciousness, she was raped and reduced to a sex slave. Hikari Ninomiya.

Watanabe, the servant, resigned. Ever since before I can remember, he has served the Ninomiya family, and I called him "Ojisama". It's been a few years since Watanabe left. When I got married, I really wanted to report to Watanabe. Using the address to visit, it turns out to be a shabby mansion... It was Watanabe, who had completely changed, who welcomed him into the messy room. The darkness in his heart...I couldn't notice it at this time.