Raph-
Issen Arashi
So as Drag and I went over this FA, we came to the conclusion that you should resubmit IA. Below are our reasoning for this decision:
a) Dai Arashi is a one time, 20% rei, bankai ability while Issokude Kyoukan is a 15% rei augmenting feat to Senkoutaihou Kata. Both of these are worded individually as instantaneously activating when their criteria are met. This makes them powerful as blocking them is difficult if not almost impossible for anyone equal to or less than Kyuto or Mouko. Having a technique which is usable 5x more than DA, and now gives more attacking power for the same cost as DA, is a no go with us. If this is the type of FA you want for Kyuto and Mouko, the rei for it will have to go up to at least 25% split however you two want it.
b) We read it but we kept coming back to this FA being an slightly upgraded, more usable, cheaper (or rather shared cost) DA only far far superior. Costs Kyuto 10% and Mouko 10% rei but for that Kyuto essentially gets her BK final attack 5 more times and instead of 7 strikes, it's now 14. Mouko gets a slightly cheaper use of IK -- only that she doesn't have to worry about dodging some attack in order for it to initiate. ... Yeah, you've essentially removed the limitations of how their respective abilities work for all and more of the benefits.
c) By taking the speed of IK and the unpredictable angles with which someone could strike, stacking that on top of the 14 blows between two people, is ungodly terrifying -- especially when in order to counter Kyuto alone you'd have to be some sort of zanjutsu equal with her and still need senpuu to defend yourself from her DA ... Yeah. I'm all for the thematic flavor of this, and the awesome, but this is too much awesome to handle without having it some time shortly GM reviewed. Neither Drag or I could think of a reasonable way to scale the power down so that it was appropriate and worthwhile, however, and we apologize for that.
Overall we liked the idea behind Issen Arashi, but it was just too damn powerful to pass.
Doushi
This, on the other hand, is approved with changes that are mainly wording, with some clarification.
a) Doushi will cost the user their threshold and rei, but is activated at the power of the recipient.
b) Doushi will not give Kiro the ability to cast Chiyudou (as this is a division specific Kidou) any more than it'd give Lucia the ability to effectively use Ei Wo Toru.
c) The base cost of Kidou spells must be paid for by the caster. If either Kiro or Lucia wants to buff it via Jumon Zoukyuu that's up for them at the time of the casting, but it would be their rei equal to the other's Kidou stat.
d) Techs won't stack. I saw you mentioning this in chat, and I don't know if you were joking or not, but if Kiro activates a tech for Lucia, it's as if Lucia activated it. If you used CIC on her, she'd get CIC, but if she tried to buff herself with CIC again it wouldn't become a 20k barrier. Same way if Lucia paid EWT - which she couldn't since no zan threshold - Kiro wouldn't be able to stack on his own payment of EWT as it's already active.