Rika Furude

From Animepedia

The main character in Minagoroshi-hen. She is a younger classmate in Keiichi's school, and is in the same grade level as Satoko. Naturally, she is great friends with her as they live together in the same house. She lives with Satoko after Sataoko's brother, Satoshi, mysteriously "disappear". Rika is easy-going and soft-spoken. She sometimes seem more mature than she really is. She is revered by the villagers as the only child of the local shrine, and always plays the role of a miko in the annual Watanagashi Festival.

She has been the head of the Furude house ever since her parents died, but rarely, if ever, attends the town meetings due to her young age. She uses "boku" for first-person statements, a word which is usually used only by males. While she does not speak a lot, she tends to mutter cute words such as mi~ and nipa~ which makes Rena scream out about how cute she acts and how she wants to take her home. She also tends to end all her sentences with ~desu. Interestingly, she occasionally shows a secondary personality whose manner of speech is much more advanced than what her age would suggest. She also seems to have clairvoyant ability.