このアプリは若者の間で流行ってる

N5 この kono this N3 者 mono person, someone, individual N4 間 aida interval, space, between, during N3 流行 ryuukou trend, fashion, fad

N3 若 jaku, nyaku, nya / waka.i, waka-, mo.shikuwa, mo.shi, mo.shikuha, goto.shi young, if, perhaps N4 者 sha / mono someone, person, personne N5 間 kan, ken / aida, ma, ai interval, space, intervalle N3 流 ryuu, ru / naga.reru, naga.re, naga.su, -naga.su current, a sink, flow N5 行 kou, gyou, an / i.ku, yu.ku, -yu.ki, -yuki, -i.ki, -iki, okona.u, oko.nau going, journey, carry out

N5 〜ている te iru Indicates ongoing action, continuous state, repeated habit, or resulting condition depending on context N5 〜で de Indicates where an action happens, means used, tool, cause, or material depending on context N5 〜の no Indicates possession, relation between nouns, nominal explanation, or turns a verb into a noun phrase N5 〜は wa Marks the topic of the sentence, indicates what the sentence is about, can contrast with another element, organizes main information