Boy group Teen Top didn't even officially debut in Japan, yet they successfully completed their Arena Tour in 4 cities.
For the last 1-2 years, there hasn't been a new rising Japanese Hallyu group, but Teen Top has been a trending group. Most groups have a difficult time surviving after a debut and official promotion. However, Teen Top was still able to fill the 10,000 seat arena easily, and built their fandom simply with local performances.
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Teen Top's agency T.O.P. Media stated, "After their debut in Korea Teen Top has greeting their Japanese fan club year after year through their concerts in Japan. They started with only 1,000 fans this year, but they were able to successfully complete their Asia Tour, and even held an encore tour in Japan that maxed out the 10,000 seats in house