Yobikomi-kun No.4

(呼び込み君 No.4) is an instrumental music in D4DJ Groovy Mix.

It was originated from a store decoration machine named "Yobikomi-kun" (呼び込み君) invented by. Its second BGM, officially named as "No.4", was released into the game on October 31, 2020 to celebrate the milestone of pre-registration over 500,000 counts for the game during the Lost Decade & D4DJ Groovy Mix Presents ONLINE LIVE.