  We derive non-abelian Toda field theories (NATFTs) from a 4d Chern-Simons
(CS) theory with two order defects by employing a certain asymptotic boundary
condition. The 4d CS theory is characterized by a meromorphic 1-form
$\omega$\,. We adopt $\omega$ with two simple poles and no zeros, and each of
the order defects is located at each pole. As a result, an anisotropy parameter
$\beta^2$ can be identified with the distance between the two defects. As
examples, we can derive the (complex) sine-Gordon model and the Liouville
theory.
