As we know the gang is still staying in Unova for the next arc. But even so, do you consider it a "Second" arc for Iris/Cilan, much like how Misty/Brock stayed for multiple arcs?
Think of it this way:
- Misty (3 regions, Kanto/Orange/Johto)
- Brock (5 regions, Kanto/Johto/Hoenn/Kanto BF/Sinnoh)
- Tracey (1 region, Orange)
- May and Max (2 regions, Hoenn, Kanto BF)
- Dawn (1 region, Sinnoh)
- Iris and Cilan (2 regions, Unova and Eastern Unova)
So have Iris and Cilan been the first characters since Misty/Brock to stay for a second arc?