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It's somewhat confirmed that the author will make a spin-off, or as you may call it "side-stories" of this series after her 2nd work concludes. Expect the side stories to come either this year or the next.
Currently, Confettio Planet, the author of My Starry Sky, has began her new work Alpha Buddy last year which is 4 years after the conclusion of My Starry Sky. During the hiatus, we've heard nothing from her and her twitter account was inactive after MSS concluded.
Source: https://x.com/starcandy_p/status/1747938249732137344?t=0I5FE1UD-dpQULC7xvyYCg&s=19