[HUNTC-378] You can insert as much as you want with anyone! Karaoke edition All-you-can-sing! All-you-can-insert! If you pay a monthly fee separately from the room fee, if you are a woman in the store, you will be a customer...

The karaoke box was far from the station, the number of rooms was small, and the facilities were not flattering, and the number of customers was steadily decreasing. However, when a certain system was introduced, the number of members increased dramatically! Whatever you do, if you pay a monthly fee in addition to the room fee, you can insert it into anyone in the store, whether it's a customer or a staff! "Hmm? What do you mean?!" I couldn't believe my ears at first! Even though you pay a flat fee, you can put as many songs and Ji Po as you want, and there is such a good story ... I would like to go and see if such a thing really exists!