The bladers that will participate are:

Norman Traver (20)

Valt Aoi (17)

Shu Kurenai (17)

Ken Midori (17)

Daigo Kurogami (17)

Rantaro Kiyama (17)

Wakiya Murasaki (17)

Zac the Sunrise (17)

Lui Shirosagi (17)

Silas Karlisle (19)

Free de la Hoya (18)

Toko Aoi (15)

Nika Aoi (15)

Fubuki Sumie (16)

Aiger Akabane (15)

Suho Genji (16)

Ranjiro Kiyama (15)

Kitt Loupez (15)

Boa Alcazaba (15)

Dante Koryo (13)

Delta Zakuro (14)

Hyuga Hisashi (12)

Hikaru Hisashi (13)

Lane Vallhala (14)

Bell Daizora (11)

Ranzo Kiyama (11)

Naru Akabane (11)

Those are all the bladers that I will write about, but i may in cloud some other. (if you want me to add any, just say so)

 btw, idk their ages i just went with the internet and a little bit of logic so sorry if I'm wrong

But here are some background information that will be helpful for your understanding. As you know, they are all bladers who work hard to be the best of the best and achiv their goal of being the world champion. So the WBBA decided to give them a break and gave them this opertunidi to stay one week on a house near the beach, so they can relax and later on come back with full power to the next upcoming tournament. When they gave out the information they also include that there will be no blading so the can really relax. Many didn't want to go because of that in the beginning but the Team owners (Chris, shu, fubuki/Toko) said it will be great, and it would also be interesting because they will meet other bladers that they didn't know (including some of the snake pit).The story will start at the arrived of everyone, some will come earlier, some later depending on where there are, this will take place in Spain and the time squer is after dynamite so yeah this is it 👍