Black.

So can Akari see ghosts?

No one can see the ghosts unless they are in the same condition as Takeru or they are holding an Eyecon.

How riders do you think Ghost will have in total? Do you think Ghost will have as much riders as Gaim did or less?

Definitely less, I doubt we'll see more than 5.

Considering that by this point in the series Gaim already had eleven Riders announced?

Less. Way less.

I'd say at most 4 Riders, 5 tops I think. Unless we get something really late in the show with a poor budget, like Gold Drive and Jun or whatever. Ghost costumes look pretty cheap to make so we may get some low-budget ones later on. For now I don't see us getting even close to as many Riders as Gaim, though.

Honestly, I feel we'll only see 2 or 3.

Ideally three. Drive really reminded of how perfect that number is for a Rider show.

Drive had four riders (5 if you want count Porto Drive). I hope Ghost will have around 5 or 6 at best. Since Wizard, we had more then two riders and glad that we are getting more then two riders in the shows these days.

I'd say probably 3 in the show and maybe two or three movie/special specific ones.