Ok I understand what you mean now. I didn't realise you meant if the low kamikaze connected in which case yes then the only way im aware of is to do ex arc kick. However I always do short run cancel after the low kamikaze in case it is blocked (if is see the string prior has been blocked) to stop the pushback. If it isn't blocked the run cancel gives me time to confirm and convert into a combo. If that makes sense. It saves a meter and I think is easier to confirm than b1 ex arc because if that is blocked you'd get a full punish.
The 112 works just as well, the reason I don't use it mid screen is as you said. It sends them full screen which is not where you want to be as Sonya, even though she gets decent zoning in this variation up close is where you should be in my opinion. In the corner you can use it and works equally as well the only reason i choose 2134 is because its more damage. It may just be more damage by 1-2% but you might as well take the extra damage.
I've managed to link it a couple times but I'm not really sure benefit you get from comboing the homing missile when you can link it to low kamikaze for more damage with a safe drone activation. So what do you think the benefit of comboing into the homing missile is?
I'm glad you liked the guide and I hope you do keep adding discussion points to this thread. If you disagree with what I just said then likewise it will offer me enlightenment.