  Kawashima's relation is conjecturally one of the largest classes of relations
among multiple zeta values. Gaku Kawashima introduced and studied a certain
Newton series, which we call the Kawashima function, and deduced his relation
by establishing several properties of this function. We present a new approach
to the Kawashima function without using Newton series. We first establish a
generalization of the theory of regularizations of divergent multiple zeta
values to Hurwitz type multiple zeta values, and then relate it to the
Kawashima function. Via this connection, we can prove a key property of the
Kawashima function to obtain Kawashima's relation.
