HP as asset gives you: +1 Str +1 Mag +2 Luck +2 Def +2 Res
if you choose HP as flaw, Kana's statue will raise Str.
it's from base attack if I recall correctly because my avatar had 43 attack after pair up as Bow Master and his Dragon Fang dealt 20 damage not 21..
a) if she is still in Mercenary after S-rank Kaze, then Partner Seal will give her Ninja.
b) you can simply use Heart Seal if you already use Partner Seal before.
1. no
2. no
3. Friendship Seal