As other commenters noted, this is not a particularly Japanese method of ice coffee brewing.
This Kyoto-style coffee tower, however, is:
http://drinks.seriouseats.com/2014/03/japanese-style-slow-dr...
This Kyoto-style coffee tower, however, is:
http://drinks.seriouseats.com/2014/03/japanese-style-slow-dr...
http://www.seriouseats.com/2014/05/whats-the-best-way-to-bre...
> With milk, the diner-style and cold brew tasted the best, whereas the Japanese style and immersion-over-ice were terrible, their bright flavors clashing with the creamy dairy, giving them the flavor of curdled milk.