My first thought was that the twin tails blonde was the girlfriend and the other was trying to prove he would cheat on her.
But knowing the author, he two-timing both the blondies makes more sense :smugchisato:
:smug:
This manga has no business being this funny
I love how nonsense the author can be writing the personality of the girls, their are definitely the "main character" of the story (with sou being a plot device for them).
This would have been a interesting anime adaptation, hearing the voice...