also: あきばけい
noun, noun which may take the genitive case particle 'no'
Akihabara style; nerdy
Slang term for the subculture, fashion, or otaku style associated with Akihabara; often implies a nerdy, tech- or anime-focused aesthetic.
彼のファッションは完全にアキバ系だ。
His fashion is totally Akihabara style.
アキバ系の店でフィギュアを買った。
I bought a figurine at an Akihabara-style shop.
From アキバ (Akiba), short for 秋葉原 (Akihabara), the Tokyo district known for electronics and otaku culture, plus 系 (type/style).