Robotics;Notes - Senomiya Misaki no Mihappyou ShukiROBOTICS;NOTES 瀬乃宮みさ希の未発表手記; The Unpublished Memoirs of Senomiya Misaki; Las Memorias Inéditas de Senomiya Misaki

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.