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Title: Oath of the Blue Sky
Lyrics and Composition: BlackCat
Singer: Rui

A prayer hidden in the night sky will tremble in the hearts of listeners.
"Oath of the Blue Sky" is an emotional ballad encapsulating transience and hope.
Using motifs of the full moon sky and faint dreams, the song delicately depicts unrequited love and unquenchable desire.
Rui's crystal clear voice and memorable melody will accompany you on lonely nights and gently encourage you to take a step toward tomorrow.
This song resonates with people of all ages, and I hope to share it with as many people as possible.

Artist Profile

  • BlackCat

    [BlackCat] - Welcome to a world of "transience," "sorrow," and "healing" - BlackCat is a music production artist active primarily on TikTok. A solitary creator, he depicts a fantastical yet somewhat mysterious worldview based on the themes of "black cats, the moon, and dark nights." All information about him other than his artist name is kept private. His "enigmatic black cat" side has also garnered attention on social media, and the power of his work itself has resonated with many listeners. All of BlackCat's songs are born from real emotions woven from his own experiences, and are characterized by lyrics and melodies that touch the heart and transcend genres. On social media, he pre-releases short videos before release, and sometimes posts full-length videos, creating a unique world where he shares emotions with listeners in real time. His fleeting and sad lyrics evoke healing and empathy. He has composed over 70 songs to date, and has also provided music for individuals and institutions. For "gentle spice," released in June 2025, they solicited title suggestions on social media, choosing the title submitted by Kisskkjj (TikTok), and also creating a participatory composition. In August of the same year, their graduation song "Sudachi" surpassed 10,000 views. With their unique songwriting sense, genre-less musicality, and the power of their heartwarming poetry, they continue to touch the hearts of many.

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