No one yet, Futaba wants to expand

Futaba realized she wanted to expand her own harem first. Her cat and Featherman Shiho were fine, yes, but she wanted...more.

Her mind went to all of the women she listed. They'd be fine additions, but what to make them? She didn't have space in her cluttered room for much more...

"I'll have to expand," she told Hifumi, who was nuzzling contentedly against her, purring. "Not just my collection, but my space as well."

That got her thinking about who had big houses. Haru, obviously, since she was now independently wealthy from Okumura. Sae also had a decent penthouse since she was making a lot more as a defense attorney. And she heard Yukari Takeba had a second apartment in Tokyo...

That meant whoever she added next to her own harem would have to be one of these three.