echo 'digraph {

"Ruri Aiba" -> "Makoto Kagami" [taillabel = "Servant of"]
"Aoi Aiba" -> "Ruri Aiba" [taillabel = "Twin Sister of"]
"Makoto Kagami" -> "Ruri Aiba" [taillabel = "Master of"]
}' | dot -Tsvg > output.svg