[Kazbox (Kazma)] Maoujou de Onanii (Maoujou de Oyasumi)

A solitary princess navigates her private desires within the quiet confines of a castle. What begins as a secret attempt to satisfy her growing sexual desire quickly becomes an overwhelming sensation she can no longer control. As her self-pleasure intensifies, she finds herself lost in a whirlwind of pleasure that she can no longer resist.