User blog comment:B214/Volume 23 discussion blog/@comment-177.177.111.64-20170425170658/@comment-31137559-20170426031342

Rias had just met Issei and that didn't last very long. Issei tried to see Asia as a little sister just to protect her from his perverted mind because he saw her as innocent. And the best way to do that while they were living together was to call her his little sister. And those were entirely one-sided. Now Vali and Lavinia have known each other for years and as far as we know they don't have any romantic feelings towards each other. Just because she's the only female that's connected to Vali doesn't mean she's going to end up with him. Vali needs an older sister figure after all.