Japanophile
A Japanophile is someone with Japanophilia, or someone with a strong interest in or love of Japanese people, culture, and history. This term even has a Japanese equivalent, shinnichi (kanji:親日, hiragana: しんにち) which literally translates to "pro-Japanese". Aguante Viral.
Japanophile Media
Lafcadio Hearn a.k.a. Koizumi Yakumo, a notable Greek author well known for his strong interest in Japanese culture and for introducing it to the Western World