Aiko finds the US a very affectionate people would like to handshakes and hugs whereas in her home country of Japan it's lots of bows.
According to her parents Aiko means love child but she looked it up in Japanese and Aiko means means bastard. When she looked up Tanaka she discovered that it means in the rice field.
So roughly her name translates to bastard in the rice field which leaves her with a lot of questions. The use another humorous tales of adjusting to the US make this funny comedy set