1st KIKI, 2nd Hearts2Hearts, 3rd ILLIT — Rookie Idol Group Brand Reputation Rankings for September 2025



According to big data analysis on rookie idol group brand reputation for September 2025, KIKI ranked first, followed by Hearts2Hearts in second and ILLIT in third.



The Korea Corporate Reputation Research Institute extracted 8,513,868 pieces of big data on rookie idol groups from August 2 to September 2, 2025, for its brand reputation analysis. Compared to the 10,458,075 pieces of big data collected in August, this represented a decrease of 18.59%. The brand reputation index is a metric created through big data analysis that identifies how consumers’ online habits significantly influence brand consumption. Through rookie idol group brand reputation analysis, researchers measure positive and negative evaluations of idol group brands, media interest, consumer engagement, and volume of communication. Qualitative assessments from the Brand Reputation Monitor are also included.



The rookie idol group brand reputation analysis integrates both boy groups and girl groups within the category, measuring participation index, media index, communication index, and community index to calculate the overall brand reputation index. Rookie idol groups are defined as those who debuted in 2023 or later.


Written by Mun Wan Sik
Translated by Lee So Yun