Sora Kasugano

Sora Kasugano is the main heroine of Yosuga no Sora, an adult visual novel developed by Sphere and adapted into a 2010 anime series. The fraternal twin sister of protagonist Haruka, Sora is described as having an "angelic, doll-like" appearance, with a frail body and an abrasive personality. She is also an orphan like Haruka; because of this she becomes possessive towards her brother and frequently fantasizes about him.

Sora is emblematic of the series' (in)famous reputation for its incestuous content and actually committing to it by depicting the siblings having sex unlike other incest-themed anime, even though the adaptation also includes other heroines' routes from the visual novel. She has garnered a loyal East Asian following in the saimoe contests, which continues to the present day via her consistent main tournament appearances in the International Saimoe League. Debuting in 2011, the Kasugano twin has appeared in nine ISML editions to date, including every edition from 2016 onwards, and has won an exhibition award by winning the emerald anklet in 2012.

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2011

 * Tsukasa Ayatsuji > Sora Kasugano > Ieyasu Tokugawa (322-288-104)

2011

 * Sora Kasugano > Laura Bodewig > Akihisa Yoshii (148-137-82)
 * Index > Sora Kasugano (185-154)

2011

 * 45th (4-0-45)

2012

 * Nova 32nd (4-0-31)

2014

 * Stella 24th (13-0-22)