Disbanding a music group with 解散

Kanji Explanation: Separating and understanding with 解

Detective Kogoro gives a young woman a ride home in exchange for concert tickets. While waiting for her to get the tickets, Kogoro notices the livingroom is filled with pop star posters.

小五郎(こごろ):: 「ヨーコちゃんに安斎(あんざい)明日香(あすか)にＴＷＯ―ＭＩＸに星野(ほしの)輝美(てるみ)…」; “There's Yoko, and Asuka Anzai, and Two-Mix, and Terumi Hoshino...”; 「すげーな！解散(かいさん)しちまったレックスのもあるぞ！！」; “Amazing! There's even the disbanded group Lex!”
コナン:: 「そんなに知(し)ってるあんたもスゲーよ…」; “It's also amazing that you know that much about them...”

Key Points

解散(かいさん) = a group breaking up
- Here 解散(かいさん) means the band Lex has disbanded.
- It is used for organizations, groups, and teams splitting up or being dissolved.
しちまった adds casual regret or emphasis
- 解散(かいさん)しちまった is a contracted spoken form of 解散(かいさん)してしまった.
- In this line it gives a rough, conversational feel: “they went and broke up”.
のもあるぞ = there’s even one of those too
- The omitted noun after の is something like poster or item.
- Kogoro is saying there is even memorabilia from a band that has already broken up.