There were five members, but guitarist SAKI left around Easter this year. This video is the first Nemophila original song music video with singer Mayu playing guitar. She plays rhythm on a few songs now when the band plays live shows. I was devastated when SAKI left, and it still hurts as the twin lead guitar thing worked so well and the band's dynamic was perfect. But the four piece iteration of Nemophila is doing great and Mayu's voice just gets better. Hazuki now takes full workload on lead and main guitar, while Mayu steps in for those occasional rhythm parts. I'm sure we'll see her playing more in the future, but I hope she'll still get plenty of songs where she's not tied to an instrument and can move around freely, which she does so well. The opening of the video is Mayu and her baby. In the quiet section near the end, we see each band member in turn followed by a photo clip of them as kids. Mayu wrote it about motherhood, as you figured. The other mom in the band is drummer Tamu, who was the first of them to have a baby. She has two kids now, who occasionally make brief appearances in the band's YT videos.