echo 'digraph {

"Haru Kaidou" -> "Aki Kaidou" [taillabel = "younger brother of"]
"Shima Kaidou" -> "Aki Kaidou" [taillabel = "Twin Brother of"]
"Aki Kaidou" -> "Haru Kaidou" [taillabel = "Older Brother of"]
"Shima Kaidou" -> "Haru Kaidou" [taillabel = "Older Brother of"]
"Haru Kaidou" -> "Shima Kaidou" [taillabel = "younger brother of"]
"Aki Kaidou" -> "Shima Kaidou" [taillabel = "Twin Brother of"]
}' | dot -Tsvg > output.svg