echo 'digraph {

"Luna Mitsuya" -> "Mana Mitsuya" [taillabel = "Sister of"]
"Takashi Mitsuya" -> "Mana Mitsuya" [taillabel = "Sister of"]
"Luna Mitsuya" -> "Takashi Mitsuya" [taillabel = "Brother of"]
"Mana Mitsuya" -> "Takashi Mitsuya" [taillabel = "Brother of"]
"Takashi Mitsuya" -> "Luna Mitsuya" [taillabel = "Sister of"]
"Mana Mitsuya" -> "Luna Mitsuya" [taillabel = "Sister of"]
}' | dot -Tsvg > output.svg