faddist; bandwagon follower; poser
Derogatory term for someone who mindlessly follows trends or fads, especially in pop culture. Often used for shallow fans or people who jump on bandwagons. Related to ミーハー, which is more common.
See also: ミーハー
That girl is a total bandwagon follower; she jumps on anything that's trendy.
ミーちゃんハーちゃんのファンはすぐに飽きて別のアーティストに行く。
Faddist fans get bored quickly and move on to another artist.
Search-only katakana form without long vowel marks; not a standard spelling.
Derived from ミーハー (mīhā), itself a slang term for a faddist or shallow fan. The addition of -ちゃん makes it more mocking and personified. The exact origin of ミーハー is uncertain, but it may be related to the names 美代 (Miyo) and 花子 (Hanako) or simply a reduplicative sound-symbolic coinage.