I hadn't paid attention to it until I kept seeing this sentiment, but there does seem to be a lack of ... I don't know how to put it. The other female characters either aren't generally liked (Lyse), are lalafells (Krile, Tataru), are of questionable age (Alisaie), or don't stick around long enough to be meaningful, and that's it? Who am I missing because it seems like pickings for female "waifu" characters are slim.