it says korean market is hard to penetrate. so many utilize it as testbed. Since I've been in japan for 6month,I find japanese market is not easy as it seems.
This is my personal opinion, You have to advertise that your material is used by which Japanese consumer. Because Japanese likes other Japanes reliance coment. If you get some reliable coment from actor or actress you can make good advertisement.
Japanese always rely on neighbor suggestion. Particularly Japanese to Japanese are more effectable.