I defeated SA Normal as 20k BP lvl 67 Midnight Blade with a lineup that was posted somewhere in the forums (MB-Kabuto-Sasuke-Kimi).

With this lineup I managed to get to the fourth wave in difficult SA but couldn't beat it just yet.

dude three people do together it will be like TI

Kabuto - Ukon Sakon - Kimimaro
Blank - Blank - Earth MC
Blank - Blank - Blank

2 - 3 - 1 - 1 - 2
Summon: deer

Cleared at level 67, 18k power
Non cultivated Ukon Sakon and Kimimaro.

First stage: clear slowly so you ramp up buffs on your team using kabuto, make sure you use 1 mystery so they all seal 1 character rather than your entire team.
Second stage: I took lightning main out because he was killing my kabuto every time, make sure you have dead souls to take fire main's sleep every turn.
Third stage: kill mei, at this point she should be dead on the first turn, make sure you use Kimimaro's mystery first to take Ao's mystery. Focus chojuro after that.
Fourth stage: Focus yogura because he will copy your annoying team. He should be dead in 2 turns, the other 2 will either die due to AoE or be close to. Afterwards just clean up

In all honesty unless you have greater than 40k power, soloing Yagura difficult will be VERY hard and time-consuming. I'm lvl 75 with almost 30k power, but none of the setups on youtube worked, nor did my own. But, i managed to get the SA difficult done on my first try in a duo-attempt. So my advice is, forget doing solo unless you're very high power, and just do it in a team; you can literally auto it like a TI.

For lower levels you just need to do immortal team, if u using midnight blade dont use 2 or 5 round Talents you need permanent talents like Bloodthirst , Anbu special tactics.

Also for ninjas Kimimaro is best option with kabuto because kabuto while healing doing little damage so when healing kimimaro it will increase his health + res + def.
And last one ninja would be some healer too or someone with huge defense/immune

HOW DUDE ? IS THAT KIMIMARO SASUKE AND MB AND KABUTO ? HOW ?
PLEASE REPLY. :)

Be more specific. What is the problem?

Also, I defeated Difficult at lvl 69 and 22k BP with lineup that has been posted many times on forums/youtube and that is : Sakon, MB, Kimi and Kabuto. Just follow the guide, it works.