Eeeee~
For duels for Sia! That would be awesome. It'd be great if she could maybe duel a male whom she could flirt with during it? XD she loves a bit of harmless flirting, lol. If not, females will also be fine! I can start this up whenever you are ready!
For Tundu I have three possibilities:
Firstly, Kalimoto. She's a traditionalist and wouldn't stand to have him bothering her and would probably be quite rude.
Likewise, Azar'bijan. He'd be less hardcore mean than Kalimoto (maybe) but he certainly wouldn't want his time wasted by a cub who won't be in the lands past adolescent. He'd tell him 'where to go' and be rude about it.
I also have Fia, but she'd be mean to him not because he's a huria but because he's a cub and she's currently grieving / trying to get over loss etc...