User blog comment:B214/Talk About What You Want! 3/@comment-24098614-20150403230113/@comment-24502975-20150406233354

He understands that all of the girls are in love with him. Based on v18 he's even picked up on Rossweisse's feelings. He just hasn't registered yet that all those girls being in love with him = harem attained.

I expect him to maybe realize it in v20. Well, I expect something major to happen relationship-wise in v20, since it's 10 volumes since v10 which was the starting point for Ise to develop actual relationships with his girls.