URI must be ascii only "https://www.linegames.org/ja/\u30C9\u30E9\u30B4\u30F3\u30AF\u30A8\u30B9\u30C8\u30BF\u30AF\u30C8-\u30C9\u30E9\u30AF\u30A8\u306E\u30BF\u30AF\u30C6\u30A3\u30AF\u30B9RPG-codes/308034080486/"
Check out the README for more details