Japanophiles

one who especially admires and likes Japan or Japanese ways.

those weebs are also called japanophiles.

Japanophilia

Japanophilia is the appreciation and love of Japanese culture, people and history. In Japanese, the term for Japanophile is "shinnichi" (親日), with "親" equivalent to the English prefix 'pro-' and "日", meaning "Japan" (as in the word for Japan "Nihon" (日本)). The term was first used as early as the 18th century, switching in scope over time.

japanophilia has escalated since the rise of anime.