echo 'digraph {

"Keita Tsuwabuki" -> "Mika Tsuwabuki" [taillabel = "Younger Sister of"]
"Ryuuta Tsuwabuki" -> "Keita Tsuwabuki" [taillabel = "Older Brother of"]
"Mika Tsuwabuki" -> "Keita Tsuwabuki" [taillabel = "Older Brother of"]
}' | dot -Tsvg > output.svg