What makes Memoria/Time for the Moon Night by GFriend notable?

'Memoria/Time for the Moon Night' marked GFriend's venture into the Japanese market, highlighting their growing international appeal. The single was well-received, contributing to their chart presence in Japan and solidifying their status within the K-pop genre during a period when many groups were expanding internationally. Released on October 10, 2018, 'Memoria/Time for the Moon Night' was GFriend's first Japanese single following their successful albums in South Korea. At this point in their career, they had established themselves as prominent figures in the K-pop scene, building on the momentum from their previous hits like 'Time for the Moon Night' which showcased their vocal harmonies and intricate choreography.