Why din't Obito Use PS???

[AlphaScythian]

Obito was tired saving their fodder asses and this manga U_U

 

[Flawž]

Plot Obviously. And so when Obito gives kakashi another power up, It'd be somewhat of a surprise.

 

[RasenUchihaChaos]

Was low in chakra and was going to die anyways have you forgotten what susanoo does to the wielder ?

 

[Tenshi Hikari]

Coz of Low chakra and so that Kakashi will shine. (Kishi wants it)

 

[lucario14]

Obito is fodder. Kakashi has skill.

More skill than a full-blooded uchiha who was trained by madara? No mate.