Hearts2Hearts is expanding its global reach with a Japanese release of its latest single.

SM Entertainment announced on March 17 that the Japanese version of "RUDE!" will be released on major music platforms on March 18.

This marks Hearts2Hearts' first song performed entirely with Japanese lyrics. The track reinterprets its original theme—playful rebellion and mischievous charm—into Japanese.

"RUDE!" previously marked a career high for the group. The single reached No. 2 on Melon's Top 100, No. 1 on the Hot 100, and No. 3 on the daily chart.

The song also secured two music show wins, topped YouTube Korea's trending chart, and ranked No. 1 on Spotify's Korea Daily Top Songs and Weekly Top Songs charts.

Meanwhile, Hearts2Hearts is set to hold North American showcases in New York and Los Angeles on March 20 and 23. Fan meetings and festival appearances are also planned.