Tikz:1つのノードから複数の線を出すには?

違う種類のコネクタを使う

\begin{tikzpicture}
\path (0,0) node[circle,miffysora] (a) {A}
(3,1) node[circle,draw,miffysora](b) {B};
\draw[->,lime,ultra thick] (a) -- node[near start,above,lime]{- -} (b);
\draw[->,Aqua,ultra thick] (a) -| node[near start,below] {$- |$} (b);
\draw[->,Aquamarine,ultra thick] (a) .. controls +(up:1cm) and +(left:1cm) .. node[above,sloped] {with control points} (b);
\end{tikzpicture}

to bend leftで避けるやり方

\begin{tikzpicture}
\path (0,0) node[circle,miffysora] (a) {A}
(3,1) node[circle,draw,miffysora](b) {B};
\draw[->,lime,ultra thick] (a) to[bend left] node[near start,above,lime]{to[bend left]} (b);
\draw[->,Aqua,ultra thick] (a) -- node[near start,below] {$- -$} (b);
\draw[->,Aquamarine,ultra thick] (a) to[bend right] node[above,sloped] {to[bend right]} (b);
\end{tikzpicture}
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