Hey guys,
I just started playing on DMM's Aigis and got really lucky. I got White Archer Nanaly (白き射手ナナリー) and Saint Iris (聖女イリス) from my first 2 premium summons . The thing I need help with though is understanding Saint Iris, from the translated japanese wiki it says "attack clicks stiff -18%" for affection bonus, I don't understand what it's supposed to mean. There is also the Hierophant & oracle thing when you awaken her, do you choose which you want? and if so is there any difference/which is the best?

If anyone could help me I'd appreciate it, thank you!