Headscratchers / Akai Ito

  • Were Yumei not making herself appearing in Kei's dream when she visit Hemizuka, Kei will simply be undetected by Nozomi and Mikage. This is lampshaded (in a comedic way) in the Akai Ito Anthology manga.
http://tvtropes.org/pmwiki/pmwiki.php/Headscratchers/AkaiIto