The only reader-added tags as of now are "Maybe the main cause is Ran-shama's tails" and "Capacity: 3 (packed like sardines)".

Seems like something they would add just because they were forced to add Karaoke machines against their will.

"OK, fine, have your damn Karaoke machines, but you have to sit in this soundproof trunk sitting in the basement next to the car park!"

NWSiaCB said:

Seems like something they would add just because they were forced to add Karaoke machines against their will.

"OK, fine, have your damn Karaoke machines, but you have to sit in this soundproof trunk sitting in the basement next to the car park!"

You're not lying, literally looks just like that.

Probably this one:
Private Karaoke Booths Take The Stage In Japanese Game Centers