In order to buy Shining Song Starnova - 18+ Adult Only Content, select the offer that suits you from the list. Click on it, after which you will be taken to the store website where you can buy Shining Song Starnova - 18+ Adult Only Content.
WARNING: This DLC is intended only for adults 18 years of age or older and contains content which some players might find offensive. This DLC restores the game to its original form.