Talk with Marisa because firepower. Though she actually gets outclassed later in sheer dakka terms (why hello there Aya/Shikieki).
Also, I started with Souichirou as well. Pure awesome, I tell you. His damage output at this stage is kinda scary. And in case you didn't notice, if you put him at range, he's actually very hard to kill. 7 wisdom and all.
Lastly, it's ryu-myaku. Literally "dragon vein". Basically means a magical leyline, more or less. How this gives money is beyond me.
Ouki is Japanese for "we tried to come up with a vaguely Chinese-sounding word with obscure kanji that means precisely nothing". Just thought I'd chip in