User blog comment:B214/Light Novel Volume 16 spoilers/@comment-23853100-20131019035942/@comment-16281343-20131020012921

Yeah, there is no point of adding girls to Ise's harem for the time being.

What needs to be done is for Ise to have more "action" with the current harem members.

And also for him to realise that he already has a harem of his own.