It's a piece of music by Umetora following last year.
I remember listening to the chorus part when I was in middle school six years ago.
I didn't know it was this kind of song.
▷Vocal/Mix - 앤티상(@entisan)
▷Original - 梅とら (https://www.nicovideo.jp/watch/sm22110492)
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🟦Twitter: @entisan
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