Fans of two leading Japanese whiskys will be sobered up when they soon disappear off shelves, done in by the whisky boom and high demand, which their distiller didn't see coming.

Suntory Holdings Ltd. said that it will stop selling its single-malt whisky Hakushu Aged 12 Years around in June, and the blend whisky Hibiki Aged 17 Years around September.

A shortage of unblended whisky is the major reason for the stoppage in order to maintain other products.

It takes more than 10 years to mature the two whiskys and the production of the original unblended whisky was planned before the recent hike in popularity.

Previously, the popularity of whisky had been on a decline since peaking in 1983. But after promoting highballs, which are mixed drinks of whisky and soda, the industry has rebounded and expanded since 2008.

Another trigger was the popularity of the morning serial drama "Massan," aired by Japan Broadcasting Corp. (NHK) between 2014 and 2015. “Massan” was the fictionalized account of the founding of Nikka Whisky Distilling Co. in Hokkaido.

In the past decade, the domestic shipment volume of Japanese whisky doubled.

Suntory had been investing 20 billion yen ($181 million) in building distillery stills and other equipment for making unblended whisky.

But a Suntory official said, “We also have to scrutinize the quality (of whisky), so we are not sure when we can start selling them again.”