The 10 year Rising event gave us such a tease. (Possible spoiler)

[Jojoya]

I mean, he is the most well known male Miqo'te, who else would I use? Damn these people are thirsty.

Why are you making the request in the first place? Isn't the lore that the children stay with their tribes until they become adults?

Is the Rising Event active yet? I know the Moogle one is and there is a stage and even the music for Rising but the NPCs keep saying it's "being set up".

You need to get far enough into the quest before the NPCs will tell you anything other than that. Pick up the quest by Sunsilk Tapestries.