Sasuke molests him Tell me when Kimi can fight with an Akatuski
To begin with .in base ,Kimmimaru has 4.5 in speed which makes him faster than any of akatsuki members except for itachi and Sasori .in base ,Kimmimaru has 5 in taijutsu which makes him better CQC material than any of Akatsuki members including Itachi who has 4.5 in taijutsu .add his CSM and bone KKG and he is certainly top tier CQC among akatsuki member even if we include helping weapons like sharingan,Hidan's scythe,Samehada ...etc
He obviously demolishes any version of Zetsu .he beats Hidan(w/ Intel) rather easily ,Konan (w/o prep) is similar to suigutsu ,despite being obviously inferior to Kimimaru , he probably can't kill her due to her paper mode ,but she can't beat him either so..
He can make a decent fight against Kakazu,Sasori and diedra ,He can Tank all Kakazu elemental attacks bar probably Gian , he can evade it though in CSM ,bone forest can destroy some of the Masks but the only problem is going through Kakazu's domu ,the only reason that makes Sasuke's chances against Kakazu better than Kimimaru's is Sasuke's elemental advantage over domu which Kimimaru doesn't have ,give Kimimaru's bones the same advantage and his chance in beating Kakazu would be better than Sasuke .
Diedra would beat Kimimaru with nothing short of C3 or C4 .
Against Sasori ,Kimimaru's taijutsu boosted with CM and his KKG is more than enough to beat Sasori's puppets army ,bone forest can do the job too .IS attacks isn't much of problem either , chiyu and early part 2 Sakura were evading it , Kimimaru in CSM can easily evade it ,w/ full Intel on Sasori's poison ,it can to either ways .
So yes ,he can fight w/ akatsuki ,it isn't my problem that you can't accept it .