When Peorth came to Earth when Keiichi summoned her,
she had to rely on Skuld's manga to learn how humans
went on dates and what not. She was utterly clueless
before that. So maybe what goes on in Heaven is
completely different compared to Earth.

But Peorth also knew that Tamiya liked it when she had
him touch her chest.

I'm wondering if the author contradicted himself here.