One of the main characters of To Heart's sequel, Lucy Maria Misora is actually an alien who can communicate with animals. Being an alien, she has many strange mannerisms, like raising her arms and speaking out "ru" that later becomes a trend as a silly way of greeting people, and refering to humans as "u". She uses matchsticks as currency and writes in Egyptian hieroglyphs.
She's so cute! I really like her pink hair. It's not shocking pink like most. Thanks to Hiroyuki for emailing this!