Bee did revert back his face pretty fast here. I don't see why he shouldn't be able to do it to the other parts.
Yeah but itachi is also aware of bee's partial transformation so he'd make sure to try & act quickly after he uses his jutsu.
Not sure if totsuka can pierce him though. Orochimaru's Kusanagi couldn't pierce a v2 jin, and totsuka was said to be a variant. So I'm not sure if it can pierce him.
Fair enough regarding V2, but even so it should still do damage considering susanoo's hand tore azura path apart. V1 is definitely getting pierced though.
I see it as Gyuuki being able to heal Bee after he's hit with Tsukuyomi. He's constantly receiving chakra and it should heal his brain, given that Tsunade was able to heal kakashi and sasuke with a touch. I doubt it'll give Itachi a window big enough to give him an advantage.
We've seen what regular genjutsu does to bee, he's been frozen by both itachi & sasuke. It may not do significant damage if gyuki can in fact
heal bee [a feat only displayed by kurama] but it will for sure provide an opportunity for itachi to finish it considering he knows bee is a PJ & can get chakra from his bijuu.
I think Bee's best choice is to not use BM here given that he's vulnerable to amaterasu, and is an easier target for totsuka. He's best bet is to keep using v1 and v2 and try to outlast Itachi by making him use susanoo constantly.
Bee only has lariats in V1/2, & using them would be a bad idea considering it's extremely linear. Itachi's susanoo has the speed to manifest before bee gets close enough & as it tanks the strike bee is in a bad position. Itachi can use ama to force bee to shed the cloak then immediately follow up w/ totsuka, he can beat him down w/ his susanoo hands & swords if totsuka can't pierce V2, or if you believe susanoo is slow [actually has
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speed feats] itachi can paralyze him first, since he'd be point blank.
& If we take a look at bee's lariat it follows a similar pattern to raikiri/chidori. That jutsu was incomplete because you need the sharingan in order to defend against counterattacks, which makes sense considering it'd be hard to dodge while moving fast in a forward motion. Basically what I'm saying is that once bee lariats into susanoo he's going to be vulnerable, just like ay/3rd raikage were in similar situations while using a similar jutsu.