I’m going to go ahead and recommend the entire Vorkosigan saga, by Lois McMaster Bujold. I advise reading in chronological timeline order (except for the prequel “Falling Free” which only loosely bears on the rest of the series’s events and characters—so start with Shards of Honor). Before I read these books I had heard HPMoR glossed as “Miles Vorkosigan attends Hogwarts”, and while this does neither character perfect justice, it was a lot truer than I anticipated.
I’m going to go ahead and recommend the entire Vorkosigan saga, by Lois McMaster Bujold. I advise reading in chronological timeline order (except for the prequel “Falling Free” which only loosely bears on the rest of the series’s events and characters—so start with Shards of Honor). Before I read these books I had heard HPMoR glossed as “Miles Vorkosigan attends Hogwarts”, and while this does neither character perfect justice, it was a lot truer than I anticipated.