Hayato

I see no reason not to have Astra unless you're planning to have Sol on her also. (or something that Astra will interfere with) Something to consider - and on that note it might only be possible to get Sol if you A+ with Soleil. It could be an option for you to gain Astra later through a skills castle in online play, though I'm not 100% sure. What I would do: A+ Effie with Hana for Astra. I would not marry Hisame - I'd marry Asugi, for access to Lethality - and A+ with Rhajat for Rend Heaven.