Hey guys!

First of all credits to OppaiPaizuru for these translations

Now let's review it a bit

Mystery: So with +2 you have more damage, 2 more units and removal of all super armors. Compared to Y where you only have interruption as a bonus

Now if you have a chakra draining combinations with the mystery I would recommend going with Y so you can interrupt + drain chakra of your enemy if you are faster pos1

But interruption on mystery doesn't mean much without that chakra draining (unless your enemy is on auto haha) therefore go for +2 mystery if you don't use it

Standard Attack: +2 makes his sweep like Susano Itachi so why not

Chase: Now this is a really hard choice. In general mystery reduction is better for longer fights but the problem is that your Killer Bee has to have above 70% health, so if you are not confident about him staying at that hp go for the +2 chase

Also another thing to consider is if you are using him in a lightning main team with Warrior Killing Intent you could reset the mystery cooldown through kills also

Passive 1: Again both are amazing, if you are going for the Y chase then you'd want this passive to be Y also because of hp healing, if you want to blitz with him then go for +2 passive so you can weaken the enemies

Passive 2: Another really hard choice, if you do not have a high critical stats then go for +ninjutsu choice

For the priority I'd say Chase > Passive 1 > Standard Attack > Passive 2 > Mystery

Although it's hard to mark it because they are all decent upgrades

1. Earth Main

A bit of change, good with buffs and protection

2. Lightning Main

Full buffs blitz style Killer Bee team

Like I said above, because this team uses Warrior Killing Intent buff if you can hope to kill something with his mystery you won't have to use the Y chase for resetting your mystery cooldown

3. Lightning Main 2

Again similarly but with more protection and less buffs :P

4. Lightning Main 3

5. Water Main

Killing with poison and this team is pretty tanky, especially if you use the Killer Bee Y passive 1 also