UOY TEM I
ECNES
UOY EVOL I
XXX

It's written backwards

I met you
Sence
I love you
xxx

I dunno if Sence is supposed to be a name here or a mispelling of Since.

Nobody made 'IT'S LANGUAGE OF TEH GODS' joke?

in japanese 「一目会った時から愛してます。」is the rough translation to [i have loved you from the moment we met]. The text written in the art is english but with japanese grammar.

So, a bit late now, but I am wondering here.
Could the message written in Unowns be totally backwards, meaning, from right to left AND from bottom to up?

Then it would read:
"XXX
I LOVE YOU
SENCE
I MET YOU"

With XXX probably being the trainer's hidden name.