[Opening] Shigure Ui Sings "Houkago Mermaid" on a Swing from Above

Immediately after the opening of her birthday live, Shigure Ui descends from above on a swing to perform the first song "Houkago Mermaid." With guests like Houshou Marine and Pokopee appearing, the audience is ecstatic at the production scale unexpected for an independent illustrator.

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