Pokemon Let's Go! Protagonist Names

The two games are being released, and apparently the two protagonists have names now, according to their wiki pages.

Male Protagonist -> Kakeru
Female Protagonist -> Ayumi

It might be worth aliasing the tags, but I can't seem to find sources for these names. Is there anything official to confirm them, or is it another Sun/Moon situation with pseudo-official names like You/Mizuki?

As far as I can tell the names were in the trailers and such. This trailer has Kakeru and the Rival is Shin.

I don't know if her name was in one of the trailers but Ayumi's name is in this tweet on an official Pokemon Twitter.

as I know original names of the main protagonists from a cartoon is Ash and Pikachu even in Pokemon Go you can see the main character is Ash

I've taken this info from the original tv show, u can also do this in this app
http://pokemon-tv.uptrivial.com/en/us/android/