According to the minutes of the proceedings recorded at the 623rd Tokyo Metropolitan Council for Healthy Nurture of Juveniles held on May 14th, TV anime "Yosuga no Sora
" was brought up for discussion. Although the section chief of the Youth Affairs concerned about the description of incest in the anime, he reached a conclusion that Yosuga no Sora does not violate Tokyo government's anime and manga regulation ordinance because the description was not excessive and there was no intention in the anime to present incest as socially accepted.
Source: Account of the meeting (PDF file)
Related topic: Manga Aki-Sora To Be Discontinued Due to Incestuous Contents