according to Raww Le Klueze here

*Also Killey:


He's available before defeating Luca Blight, same with Annallee, under the right circumstances they're actually available as soon as you've seen Sasarai's entrance.

viewtopic.php?f=27&t=11936

Turns out a very old post confirmed it

viewtopic.php?f=27&t=4461

Now if only someone can update Killey and Annallee recruitment section so that we don't forget of this awesome discovery

wait so.... what needs to be changed in the list? how early they can be recruited?
i moved them above the first mention of having to defeat Luca.... let us know if it needs to be different.

Just add a note like you did on Long Chan Chan's recruitment

Note: Once you meet w/ Lepant and get back to Banner, Apple and Ridley take you to HQ. You go to the meeting to acknowledge your return from Toran and then you're sent off to bed. During the night, you can talk to Shu OR Nanami and see the event b/w Flik and Nina. If you talked to Nanami during the night, she'll talk about last night and join your convoy. If you talked to Shu during the night, Apple'll talk about last night and join your convoy. After all these events, you can go to South Window and get both Annallee AND Killey BUT before going to the meeting to talk about Ridley's recon in Radat