Yūko Kanda is Sorata's younger sister and is in her third year of junior high school; she later attends Suiko. She borders on the line of a brother complex and just wants to be spoiled by Sorata. At first, she does not like any of the other girls because she thinks they are taking her brother away, but by the time she stays with them for some time, she at least accepts Mashiro because she "has a few issues", but still dislikes Nanami because she not only does not need Sorata, but also helped Sorata's and Yūko's mother do a lot of house chores during her stay. She is quite air-headed and has a tendency to jump to conclusions about her brother and the other girls, mostly ending in perverse ways.
Voiced by: Yui Ogura
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