How do I get kiro blue balls encounter

[Rayna]

It seems that no matter how much I try, I can’t get her encounter. I’m level 1. Am I under level?

 

[TheShepard256]

No, you're not underleveled; not having done it before is the only requirement. It's random (a 1 in 4 chance each time you fly between planets to proc a travel event, then one available random event is chosen randomly), so you're probably just getting unlucky.