echo 'digraph {

"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"]
"Kaiser de Emperana Beelzebub IV" -> "Hildegard" [taillabel = "Servant of"]
"Yolda" -> "Hildegard" [taillabel = "Younger Sister of"]
"Kaiser de Emperana Beelzebub IV" -> "Tatsumi Oga" [taillabel = "contracted to"]
"Aoi Kunieda" -> "Tatsumi Oga" [taillabel = "Classmate of"]
"Hajime Kanzaki" -> "Tatsumi Oga" [taillabel = "Classmate of"]
"Shintarou Natsume" -> "Tatsumi Oga" [taillabel = "Classmate of"]
"Tatsuya Himekawa" -> "Tatsumi Oga" [taillabel = "Classmate of"]
"Oga's Mother" -> "Tatsumi Oga" [taillabel = "Son of"]
"Oga's Father" -> "Tatsumi Oga" [taillabel = "Son of"]
"Misaki Oga" -> "Tatsumi Oga" [taillabel = "Younger Brother of "]
"Lamia" -> "En" [taillabel = "In love with"]
"Izabella" -> "En" [taillabel = "Young Master"]
"Kaiser de Emperana Beelzebub IV" -> "En" [taillabel = "Older Brother of"]
"Yolda" -> "En" [taillabel = "Master of"]
"Sachura" -> "En" [taillabel = "Master of"]
}' | dot -Tsvg > output.svg