Futaba drops the bomb when she details the exploits of Joker after installing a surveillance camera in his room. When Ann, Makoto, and Haru all realize that they’d be having sex with Joker in a big harem setup, they march to the taciturn Joker, who happens to be pre-occupied with three other girls at once. Unwilling to back down, the girls decide to jump him all at once, resulting in one epic harem.
Hope to see her in the next work. <3