Ayuna Han, known worldwide as Nana, is the leader, producer, visual, ace, and all-rounder of Ruby, the biggest girl group in the world. Alongside Ryujin, the group’s main rapper and lead dancer, Rei, the main dancer and vocalist, and Ningning, the main vocalist and maknae, she has helped Ruby become one of the most successful groups in history since their debut on February 12, 2019.