What about this is tomboyish? That she wears boxers to bed and has short hair?
At this point the tag "Tomboy" have devolved into "Short Hair"
We seriously need more long-haired tomboys to counter this
I second the long haired tomboys, cuz I'm an example of one. But Eri-chan here did seem like a tomboy, until we see her in that cute skirt and sweater. So I don't think she's a tomboy as well