
Quick answer — Eiko Shimamiya worked on When They Cry Kai (Theme Song Lyrics), When They Cry (Theme Song Performance), Shakugan no Shana: The Movie (Theme Song Performance) and 2 more anime.
Eiko Shimamiya worked on When They Cry Kai (Theme Song Lyrics), When They Cry (Theme Song Performance), Shakugan no Shana: The Movie (Theme Song Performance), When They Cry Rei (Theme Song Performance), Higurashi no Naku Koro ni: Nekogoroshi-hen (Theme Song Performance).