秋姫 すもも

A cute yet shy girl who tends only to talk to her close friend Nako. She is a Stellar Spinner, a sort of stardrop collecting magician who is revealed to be a human replacement for one who became ill and was not able to come to the human world to collect the stardrops. 
She has a deep crush on Masaharu, and though she has him for a partner in collecting the stardrops, she is unaware of his true identity. She has a very non-confrontational attitude, and when she meets Masaharu in his stuffed animal form, she names him "Yuki-chan" (because it sounds cute) and insists he use the word "boku" (僕) to refer to himself instead of the more boastful, and manly "ore" (俺). She is very shy around water and is unable to swim, but soon learns to overcome it when a stardrop falls into a pool. Sumomo is a replacement Stellar Spinner of the Prima Pramu school. She is later revealed to be the daughter of Karin Kisaragi (Natsume's sister), who was considered the greatest Stellar Spinner of all time unbeknownst to Sumomo at the moment. Sumomo has also inherited her mother's skill as she later pulls off a high level skill that even shock her rival when her rival learned that the person who pulled the skill off was none other than Karin. She later learns Masaharu's secret and due to this he turns into a doll and she cries doubting her love. When she discovered the side effect of the potion to cure Masaharu, the couple decide to spend their last night together ending it with a kiss before he drinks the potion, and now Sumomo is struggling how to express love without upsetting him./

From url=http://en.wikipedia.org/wiki/Nanatsuiro_Drops#Main_characters