「NiziU」、韓国デビュー曲「HEARTRIS」のMVがYouTube再生回数5000万回突破（「NiziU」公式SNSより）
”NiziU”, MV for Korean debut song ”HEARTRIS” exceeds 50 million views on YouTube
The music video for the Korean debut song "HEARTRIS" by the 9-member girl group "NiziU" has exceeded 50 million views on YouTube.
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