Kristallnacht ~From the dark confession~!

Original work: Miho Yabe's Blue Confession Crystal Night has been made into a complete anime DVD! Riho and Satoru, who have continued on their respective paths as idols and musicians, have come this far, and the two of them, who can never tolerate scandal, suddenly find themselves in a relationship where they only have sex while keeping their distance from each other. Riho's younger sister Lina appears between the two, and the delicate love triangle relationship soon develops into a threesome. What is the true love that the three of them seek? 9