The principle at work here is that while call-by-push-value gives us a syntax for an adjunction (between value and computation categories) with a syntax for the profunctor the adjunction represents (the term morphisms), we can also consider the \emph{Kleisli} categories of the adjunction, which are equivalent to the images of the $\u F$ and $U$ types. % These are precisely the categories corresponding to call-by-value and call-by-name languages respectively. % Then we can ask in what sense the connectives extend from functors on the value and computation categories to ``functors'' on the corresponding Kleisli and co-Kleisli categories. % We put ``functor'' in quotes because in fact, these will not quite satisfy the ordinary sense of functoriality in multiple arguments. % Instead, the functors will be \emph{separately functorial} in each argument, whereas ordinarily functor in several argument means \emph{jointly functorial}. % So for example let $\cat C, \cat D , \cat E$ be categories, then we would say that a separately functorial function $F : \cat C, \cat D \to \cat E$ would consist of first an action on objects $F_0 : \cat C_0, \cat D_0 \to \Cat E_0$ and then two actions: taking any object $d \in D_0$ to a functor $F(-,id_d) : \cat C \to \cat E$ and similarly one taking any object $c \in C_0$ to a functor $F(id_c,=): \cat D \to \cat E$. % Then we have two candidates for a true joint functorial action that are in general not equal: $F(f,id)\circ F(id,g)$ and vice-versa $F(id,g) \circ F(f,id)$. % The fact that these are \emph{not} models the fact that evaluation order matters. \begin{theorem}[Effectful Functors] Given a call-by-push-value adjunction model $V,C,R,F,U$ and given any jointly functorial functor $G : D_1,\ldots,D_n \to E$ where all of $D_1,\ldots,D_n,E$ are either $V,C,V^o,C^o$, that is \emph{strong} in that for each argument category $D_i$, there are morphisms of one of the following forms (whichever is well-sorted for $G$ and $D_i$) \[ G(D_1,\ldots,F(D_i),\ldots,D_n) \to F(G(D_1,\ldots,D_n)) \] \[ G(D_1,\ldots,U(D_i),\ldots,D_n) \to F(G(D_1,\ldots,D_n)) \] \[ G(D_1,\ldots,F(D_i),\ldots,D_n) \to U(G(D_1,\ldots,D_n)) \] \[ G(D_1,\ldots,U(D_i),\ldots,D_n) \to U(G(D_1,\ldots,D_n)) \] then there is an associated separately functorial functor $\hat G : \hat D_1,\ldots,\hat D_n \to \hat E$ where \begin{align*} \hat V = F(V)\\ \hat C = U(C)\\ \hat D^o = (\hat D)^o \end{align*} \end{theorem} \begin{proof} \end{proof}