echo 'digraph {

"Subaru Hoshina" -> "Kaoruko Waguri" [taillabel = "Friend of"]
"Rintarou Tsumugi" -> "Kaoruko Waguri" [taillabel = "Girlfriend of"]
"Kaoruko Waguri" -> "Rintarou Tsumugi" [taillabel = "Boyfriend of"]
"Kaoruko Waguri" -> "Subaru Hoshina" [taillabel = "Friend of"]
}' | dot -Tsvg > output.svg