i agree kirai is what got me into the game but i picked up pandora first, moved to dreamer and now am on kirai and under 2 months, i've been miniature gaming for 10+ years now though so it's not hard since i've played 2nd-5th 40k, warmachine, and everything inbetween pretty much at some point.
You got to pick up the shikome, other than ikiryo the shikome is just mmm, mmm good
for the lost love i am using "The Colonel" model from anima tactics the flame isn't attached to the model except for a very little bit in his hand which i am gonna paint up to look like magic coming out of his hand.
as for kirai, after you get the box set i recommend you get
1 shikome
2 blisters of seishin (2 to a blister)
2 blisters of Gaki ( come in blisters of 2)
and a blister of onryo
after that you can look at other spirits, jack daws a pretty popular one but doesn't take my fancy, so are the hanged.