I have a number of Crypto Currency Wallets that also fill up my C: drive as they default to my user profile directory structure too. These can be redirected to another area a bit easier than a junction point.
Again move the required data to another drive and directory, in this case the block chains.
Then edit the required wallet’s shortcut with the following suffix in the Target: section:
–datadir=<path to new location>
“C:\Program Files (x86)\KimoCoin\kimocoin-qt.exe” –datadir=D:\cryptocurrencies\KimoCoin