The Assassin Sisters (Patreon)

If Zen was the one who got hit by the mind-shattering black magic and took on some aspects of Natani, suggested by Kamaro12.

Though, in reality, it probably wouldn't be much different from just how they are normally, since curse or no curse, Natani was never very traditionally feminine, and the assassin guild is still male-only. So, yeah. Then again "draw them pretty much how they are now" wouldn't really make for much of a sketch. XD