echo 'digraph {

"Kaiser de Emperana Beelzebub IV" -> "Hildegard" [taillabel = "Servant of"]
"Yolda" -> "Hildegard" [taillabel = "Twin sister of"]
"Hildegard" -> "Kaiser de Emperana Beelzebub IV" [taillabel = "Young Master"]
"Tatsumi Oga" -> "Kaiser de Emperana Beelzebub IV" [taillabel = "contracted to"]
"En" -> "Kaiser de Emperana Beelzebub IV" [taillabel = "Younger brother of"]
"Hildegard" -> "Yolda" [taillabel = "Twin sister of"]
"En" -> "Yolda" [taillabel = "Servant of"]
}' | dot -Tsvg > output.svg