Sekaijuu Minna Koi wo Suru Hi

 is the fourth single by MERUCHU.

It was released on December 23, 2018.

Tracklist

 * 1) Sekaijuu Minna Koi wo Suru Hi (世界中みんな恋をする日)
 * 2) Sekaijuu Minna Koi wo Suru Hi (Off Vocal)

Featured Members

 * Hori Yuuka
 * Yuria
 * Tasaki Karin
 * Kinoshita Miyu