Ooooh.... So her affection for Maho is deeply rooted from a single moment in their past when she fell in love with her.
And it was under the mistaken impression that she was a boy. Man, she must have had one hell of a confused childhood and adolescence after that.
After a while, Erika finally came backEeekAgain!?I wonder if they've gone home already...Ah~Hm?Hey, it's you... wanna hang out again...!MihoOnee-chan, was there an Onii-san with us last time?Sorry about before... i-is that r-really cool Onii-san with you...?MahoHuh? Onii-san?No, not that I'm aware of...Erika:*POP UP*Seems like there was a misunderstanding. Yeah, I sometimes get mistaken when I wear those clothes, but I'm still a girl....eh? Huh? O- Onee-san...? Onii-san...?...hm? Yeah, that's right.I'm so sorry for being mistaken~~~Our clothes got dirty, so we changed.