Anime Battle Royal! Enjoy......

Arguably, one of the best Anime Arc ever is the Hunter X Hunter: Chimera Ant Arc. 

Gon and Killua started their adventure to find Gon's father after what happened inside the Nen Game called Greed Island.

Hoping to find his father, Gon encountered Kaito instead, after he protected both kids from an oversized ant. This started their adventure that escalated to super-epic proportions.