itch.io

This is the first time I've heard that Jashin is from Russia

Sorry, I probably wouldn't consider using boosty.  (；′⌒`)

You can buy DLsite Point at My Ci-en Payments or wait for the DLsite version to be released.  

If you are in Russia, you may need to buy a third party recharge serial number, but you may need to pay more amount for that  ~(=^‥^)ノ