The story detailing the past of Senomiya Misaki, elder sister to the Robotics;Notes heroine Senomiya Akiho.
Adaptation of the [light novel](https://myanimelist.net/manga/89388) by the same name.
Part of [Robotic;Notes](https://mangadex.com/?page=search&title=Robotic%3BNotes) series.
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