How could Kakashi use Susanoo?


There are two reasons I have this query (spoiler alert!):

> Firstly, Obito didn't have Susanoo. Considering you need to awaken both
> Tsukuyomi and Amaterasu, while Obito never used even one of them, how was
> Kakashi able to use Obito's eyes to produce Susanoo? If he copied Susanoo,
> then how did he do that? Is it even possible to copy something like Susanoo?  
>  
>  Secondly, not being of the Uchiha bloodline, he faces immense problems in
> using even a single eye for long periods of time. He almost lost half his
> chakra by making a lightning clone against Deva Path. On top of that, now he
> has both eyes after a long drawn battle fighting the likes of Zetsu, Obito,
> Madara and now Kaguya, how is he even supposed to stand?




**There is no plothole. Anyone with 2 MS can use Susanoo. Kakashi received
chakra from Naruto/Obito.**

![enter image description here](https://i.stack.imgur.com/o0Juh.jpg)

