The one who uses illusion is tobirama in video

[uchihamad]

In naruto video the one who uses genjutsu against Hiruzen is Tobirama but in manga it is Hashirama .I think they done a mistake or done it purpose fully ?

 

[JUICEMON GENESIS]

We'll have to see what happens in the manga when the two of them join the fight.

 

[GwemBaba]

Who knows? It would be fair to assume they both know it.

 

[Drakengard]

The anime probably wanted to give Tobirama some feats to balance Hashirama's Mokuton. That way it would be great water style + genjutsu vs. legendary wood release instead of great water style vs. legendary wood release + genjutsu

 

[Orochimaruofthesound]

Who knows? It would be fair to assume they both know it.

i agree the infinite darkeness jutsu could just be a generic kage level jutsu