She is a female second-grade elementary school student who just got transferred into Seiyo Academy. She has a high spunk character and always being distracted whenever someone was talking to her. She is very kind and caring to poor things, for example, watering a plant in the sidewalk and saving a kitten from a tree. Ever since when she first met Amu Hinamori and the Guardians, her dream goal is wanting to become a Guardian herself.

Rikka has the rare ability to see Shugo Charas and to communicate with X-Eggs without having her own Heart's Egg.

Source: shugochara.wikia.com</a>

When Hotaru Character Transforms with Rikka, they become "Pure Feeling". She "slightly" resembles "Amulet Diamond" by the yellow clothing and hair style.

* Appearance: She seems to show 40% of her bare skin to probably show the pureness of her. There are six sun-like orbs on her back which resemble an image of a "sun" on Hotaru&amp;#039;s egg. Some of her clothing resembles Hotaru&amp;#039;s, and she wears orange hair bands on her hair.

* Abilities: As Pure Feeling, she can perform Open Heart with Amulet Diamond; which doubles the power to restoring broken X-Eggs.