Rika is 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 is revered by the villagers as the heir of the local shrine, and plays the role of a miko in the annual Watanagashi Festival. She has been the head of the Furude house since her parents died, but rarely attends town meetings due to her young age. While she does speak in normal context, she likes to say nonsense words such as mii (みぃ〜) and nipah (にぱ〜) and often ends her sentences with nano desu (〜なのです, lit. "it is so"), which inflame Rena's passion for cute things. She also likes to describe events using sound effects, such as "The cat was going 'nya nya' and 'scritch scritch'" or saying "Clap! Clap! Clap!" when clapping her hands. In reality, she is being reborn in a 'new world' at some random time before or during June 1983, and in most of the worlds she is the only one to remember the previous lives. She believes she has lived over 100 years by the time of Tsumihoroboshi-hen, but continues to act like a child in order not to alarm her friends. Prior to Matsuribayashi-hen, she is the only one able to see Hanyū, who has been an "imaginary friend" to her all her life. Despite her young appearance, she seems to be quite fond of wine, as well as kimchi, which she uses to silence Hanyū when Rika is in a bad mood; this works because both Hanyū and Rika's senses are linked together, though this seems to be redundant by Matsuribayashi-hen, possibly because of Hanyū's coming into the world. The wine she drinks is hinted to be Bernkastel vintage.
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