User blog comment:B214/General Discussion/@comment-24098614-20170917021146/@comment-29963364-20170917025506

Then I guess that you don't like Serafall (Sitri) Leviathan either, since she basically has the appearance & personality of an elementary school girl with big tits (Oppai-Loli).

Even if the anime tries to "age her up" a bit, the LN made it very clear that she's an Oppai-Loli in body & mind.