I’ll elaborate on how the swapping seems to work, as I’ve frequently tested it and had to remember to use it.
For lack of better terms, you should consider the buffs given by Explosive Shadows to be “snapshot” buffs, the crucial elements being “Shadow Clone Skill +2” and “Ninpou: Shadow Clone Atk. +18%…”
When you do a combo, you have the Explosive Shadows on, with your optimal weapon (for me, currently +10/+8 Circuit. Savior one day pls) on one of your quick slots. Start your CoE, cast all of your abilities, release CoE, and THEN switch weapons.
You do this because all of your clones initially created will have the Explosive Shadows buffs, and all of the clones from CoE will then gain the Explosive Shadows buffs as well, since you had already released your CoE. As all of your skills are being cast, however, their damage outputs will change to reflect that of the weapon you swap to, as the skills themselves aren’t supposed to be able to be snapshot - but the clones that cast them will, thus the damage increase from Explosive Shadows is applied (along?) with the damage of your stronger weapon.
It is crucial to do this combo as quick as possible. The longer your abilities are being played without you having switched to a stronger weapon, the more DPS gain you end up losing out on.
I’d also be willing to make a video(s?) for demonstrating this and other Kunoichi stuff and giving english explanations for the things I do know, as I’m painfully aware that there are not many resources at all for our hottest gril. If anyone’s interested, please do let me know