Atsu & Miwa. ❤Miho is okay and I like RuRu the least. I just don't care for her voice much. It's pretty obvious you can tell Miho doesn't have much experience, and Ruru just sounds ok lol. Atsu and Miwa are already familiar with singing as Atsu was already an idol and Miwa is a folk singer. All Miho has is a gymnist and again RuRu is "just okay."