Most Worthless Arcs in Anime

[Star_Of_Hope]

So, what are the most worthless arcs according to you?
Do give us the name of the arc as well as the name of the anime

 

[Demon_skeith]

Mostly filler, though some main cannon arcs can be bad as well.

 

[Blackangel]

i don't know any such arcs at all
usually it's all about how one sees these filler arcs and some filler arcs can be really good.