User blog comment:Animegeek1689/Does Issei really love Rias?/@comment-1359322-20150627145203

But seriously all of your points make zero sense.

First off, we don't know for sure if Lord Gremory doesn't have other children, they might just simply not be shown since Ise and the others only visited the Gremory main palace.

Second, only Xenovia and Asia has expressed their intention to follow him, the others girl never said so.

Third, he doesn't treat her more special? Then what do you think counts as special? Banning all the girls from interacting with Ise? Demanding Ise to ignore the girls? Or set some random rules that prevents the girls from getting close to Ise?