IRU

IRU is the white representative of Zen Zero Ranker and is referred to within the group as the "baby voice" for her soft and distinctive vocal tone. Before joining Zen Zero Ranker, she was a member of the idol group Treble. In addition to her idol activities, she operates her own clothing brand, Newro Nova.

She has described herself as someone who finds it difficult to verbalise her thoughts, preferring to express herself through music and performance. Despite her soft vocal tone, she has a strong affinity for thrash metal and regularly introduces her favourite albums in the genre to fans.

During the pre-debut period, IRU participated in live performances and carried out a personal acoustic singing countdown project leading up to the group's official debut on March 1, 2026.

On April 27, 2026 it was announced that IRU would withdraw from Zen Zero Ranker due to health complications.