noun
youth culture
Refers to the customs, values, fashion, music, and lifestyle shared by young people, often as a distinct subculture.
日本の若者文化は海外でも人気がある。
Japanese youth culture is popular even overseas.
彼は若者文化に詳しい。
He is knowledgeable about youth culture.
Compound of 若者 (young person) and 文化 (culture). A straightforward modern term with no obscure historical derivation.