So I've been running through Thracia for the first time using the Translation patch and have hit something of a roadblock on Chapter 23
Cyas is Recruited at the beginning of the chapter and every guide says if you don't choose Sety then Cyas joins you (if you choose Cety Cyas leaves at the end of the chapter). Sety Enters the map and kills the boss when someone from your army enters the green square; however, if you kill the boss guarding the castle before the NPC turn he doesn't appear at all.
Heres what I tried,
Killed boss on the first turn and seized the castle. Cyas left at the End of the chapter for the Tower of Blagi rather than joining my army signifying that I'd recruited Sety Instead (though I didn't).
When that didn't work I baited the green square with a Dracoknight and Sety appeared. I brought him to the upper right corner with a Draco later on, but didn't recruit him. I finished the chapter without recruiting Sety and Cyas still left.
Am I missing a detail to his recruitment here? Has anyone else had this problem? Is this perhaps a glitch?