Tikz angles library: draw arc while setting anchor

Question

I am using the Tikz library angles to draw an arc between two edges. My goal is to create this:

However, I don't know how to set the anchors for the \pic command. I set it for the edges, but (logically), this doesn't give the desired result:

\begin{tikzpicture}
\node[draw,circle] (n3) at (0,0) {3};
\node[draw,circle] (n4) at (1,0.5) {4};
\node[draw,circle] (n5) at (1,-0.5) {5};
\draw[->] (n3) to (n4);
\draw[->] (n3) to (n5);

\pic[draw]{angle=n5--n3--n4};
\end{tikzpicture}

How can i set the anchors in the \pic command? The following didn't work:

\pic[draw]{angle=n5--n3.east--n4};

Answer 1

\documentclass{standalone}
\usepackage{tikz}

\usetikzlibrary{calc,positioning,angles,arrows.meta,quotes,intersections}
\usetikzlibrary{through}

\begin{document}
    \begin{tikzpicture}
    \node[draw,circle] (n3) at (0,0) {3};
    \node[draw,circle] (n4) at (1,0.5) {4};
    \node[draw,circle] (n5) at (1,-0.5) {5};
    \draw[->] (n3.east) to (n4);
    \draw[->] (n3.east) to (n5);
%   \pic[draw]{angle=n5--n3--n4};
\draw[thick,red] ([shift=(-15:0.5cm)]0,0) arc (-15:15:0.5cm);
\end{tikzpicture}
\end{document}

Answer 2

Perhaps the example under the link will help you (Draw angle between two line). So you can define a certain radius for the angle.

Answer 3

I have solved it. The solution is to create an additional coordinate east of the node, and draw things from there:

\begin{tikzpicture}
\node[draw,circle] (n3) at (0,0) {3};
\coordinate[right=0mm of n3]  (n3e);
\node[draw,circle] (n4) at (1,0.5) {4};
\node[draw,circle] (n5) at (1,-0.5) {5};
\draw[->] (n3e) to (n4);
\draw[->] (n3e) to (n5);

\pic[draw,angle radius=2mm]{angle=n5--n3e--n4};
\end{tikzpicture}

Resulting in: