\oresen* や \oresen** はあるようなので、\oresen を改造して
名前は \Oresen にしてみました。

\documentclass{jarticle}
\usepackage{emathPh}
\makeatletter
\def\Oresen{\def\oresen@@kyokuzahyou{0}\@ifstar{\tenretu}{\@Oresen}}%
\def\@Oresen{%
  \edef\by@perl@retu{0}%
  \edef\put@kuromaru{0}%
  \@ifnextchar<{\@@Oresen}{\@@Oresen<\empty>}}%
\def\@@Oresen<#1>#2{\let\org@sensyu\sensyu
  \ifx \empty #1\else\setkeys{emP}{#1}\fi
\def\@Oresen@sub{%
  \@ifnextchar[{\@@Oresen@sub}{\@@Oresen@sub[\empty]}}%
\def\@@Oresen@sub[##1]##2(##3,##4){%
  \edef\oresen@kyokuzahyou{\oresen@@kyokuzahyou}%
  \edef\oresen@soutaizahyou{0}%
  \Strsep{##2}{[}\oresen@Vname\oresen@opt
  \Strchr\oresen@opt{r}\oresen@tmp
  \ifnum\oresen@tmp>\z@\edef\oresen@kyokuzahyou{1}\fi
  \Strchr\oresen@opt{s}\oresen@tmp
  \ifnum\oresen@tmp>\z@\edef\oresen@soutaizahyou{1}\fi
  \@ifnextchar({\@@oresensub@std[##1]\oresen@Vname(##3,##4)}{%
  \@ifnextchar[{\@@oresensub@std[##1]\oresen@Vname(##3,##4)}{%
    \@@oresensub@brev[##1]\oresen@Vname(##3,##4)}}}%
\def\@@oresensub@brev[##1]##2(##3,##4)##5\@nil{%
  \ifthenelse{\equal{##5}{}}{%
  \@@oresensub@std[##1]##2(##3,##4)\@nil}{%
  \@@oresensub@std[##1]##2(##3,##4)[##5]\@nil}}%
\def\@@oresensub@std[##1]##2(##3,##4)##5\@nil{%
  \ifnum\oresen@kyokuzahyou>\z@\Rdef(##3,##4)\@OresenV\else
  \edef\@OresenV{(##3,##4)}\fi
  \ifnum\oresen@soutaizahyou>\z@\Addvec\@OresenV@old\@OresenV\@OresenV\fi
  \expandafter\edef\csname ##2\endcsname{\@OresenV}%
  \edef\@oresen@subtmp{{\csname ##2\endcsname}##5}%
  \ifnum\put@kuromaru>\z@\expandafter\Kuromaru{\csname ##2\endcsname}\fi
}
\edef\oresen@siten{}%
  \Cfor{\def\@OresenVs{#2}}{\not\equal\@OresenVs\empty}{}\do{%
    \Strsep\@OresenVs{;}\@OresenV\@OresenVs
    \trim\@OresenVs\to\@OresenVs
    \ifnum\by@perl@retu=\z@
    \else
      \expandafter\@tenretu@seppara\@OresenV\@nil
      \edef\@OresenV{%
        \the\namae@opt\the\tenretu@namae(\tenretu@x,\tenretu@y)\tenretu@n}%
    \fi
    \expandafter\@Oresen@sub\@OresenV\@nil
    \ifthenelse{\equal\oresen@siten\empty}{%
      \edef\oresen@siten{\@OresenV}%
    }{%
      \edef\Oresen@tmp{\@OresenV@old\@OresenV}%
      \expandafter\sensyu\Oresen@tmp
    }%
    \edef\@OresenV@old{\@OresenV}}%
    \def\by@perl{\by@perl@}%
    \let\sensyu\org@sensyu
    \ignorespaces}%
\makeatother
\begin{document}

\begin{zahyou}[ul=5mm](-2,4)(-2,8)
\Oresen{A(2,0)s;B(3,1)se;C(3,3)e;%
D(1,5)ne;E(-1,5)n}
\end{zahyou}
\begin{zahyou}[ul=5mm](-2,4)(-2,8)
\oresen{[]A(2,0)s;[]B(3,1)se;[]C(3,3)e;%
[]D(1,5)ne;[]E(-1,5)n}
\end{zahyou}
\begin{zahyou}[ul=5mm](-2,4)(-2,8)
\oresen{A(2,0)s;B(3,1)se;C(3,3)e;%
D(1,5)ne;E(-1,5)n}
\end{zahyou}
\begin{zahyou}[ul=5mm](-2,4)(-2,8)
\oresen*{A(2,0)s;B(3,1)se;C(3,3)e;%
D(1,5)ne;E(-1,5)n}
\end{zahyou}
\begin{zahyou}[ul=5mm](-2,4)(-2,8)
\oresen**{A(2,0)s;B(3,1)se;C(3,3)e;%
D(1,5)ne;E(-1,5)n}
\end{zahyou}
\end{document}
他のコマンドとのバッティングは確かめていません。

▼関連発言
│
└◆766:\oresen* [st] 10/30 17:30
　├◆767:Re:\oresen* [tDB] 10/31 17:57
　└◆768:Re:\oresen* [石原　守] 10/31 19:07
　　└◆769:Re[2]:\oresen* [st] 11/03 06:58
　　　└◆770:Re[3]:\oresen* [石原　守] 11/03 09:29<-last