This is the 5974th most frequent Japanese word.
アイマス
"アイマス" is short for "アイドルマスター" (Idolmaster), a Japanese multimedia franchise centered on idol training simulation games and related content.
In this sentence, 'アイマス' is used as a popular abbreviation for 'The Idolmaster', a multimedia franchise.
アイマスの新しいゲームが発売されました。
A new game from Idolmaster has been released.
Here, 'アイマス' refers to the live event associated with the Idolmaster franchise, showcasing its entertainment aspect.
友達と一緒にアイマスのライブイベントに行きました。
I went to an Idolmaster live event with my friend.
The use of 'アイマス' in this context signifies the characters and storyline from The Idolmaster featured in an anime.