10-member boy group UP10TION excited the crowds in Tokyo and Osaka, Japan on June 4 and 5 for their 'Spotlight' showcase!

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The showcase was an immense success with about 5,000 Japanese fans present.  It started with the boys performing their title song, which they wrapped up promoting in Korea, "Attention," then each member introduced himself.  They also performed their other songs like "Stay" and "Pretending Nothing's Wrong," which hadn't even been shown in Korea before!

Even before the showcases, the group had done smaller events in other places like Okayama and Nagoya, each event raking in about 1,000 fans.  Looks like they're very popular there!