Day 3 - Favorite arc (Some spoilers:read@own risk)
My favorite arc is the future arc.
Even if it’s only for a few episodes we get to see the guardians ten years into the future (minus Tsuna) as well as their friends, the Varia, etc. (BelxFran ASJJFALSDJFALKSDJF!)
Also, they get to battle the Milliefore family and we get to learn more about Reborn and the other arcobaleno. So, it’s awesome and I love it.