Publishing initiatives usually produce a junior tie-in that recaps the grown-up one in shorter words. The High Republic Adventures is not that. Daniel José Older got his own cast, his own corner of the setting and thirteen issues to run them, and the result reads as a load-bearing part of Phase I rather than a summary of it.
Older's trick
The trick is that the book is about apprentices, so being new is the subject rather than a concession to the reader. Nobody in the lead cast knows what they are doing, which means nobody has to be told things for the audience's benefit — the exposition is simply what a Padawan would be asking anyway. It is a structural solution to the oldest problem in tie-in comics.
Harvey Tolibao's line is the other half of it. This is dense, hatched, unfashionably detailed artwork on a book nominally aimed at younger readers, and IDW let him do it. Toni Bruno takes over for issues 8–10 in a much cleaner style and the switch is jarring, which is the run's clearest weakness.
Where it fits
Read alongside Marvel's Star Wars: The High Republic rather than after it — they share a timeline and a set of villains, and the crossover beats land better in parallel. The 2021 annual is worth the detour on its own: five short stories by Claudia Gray, Justina Ireland, Older, Cavan Scott and Charles Soule, which is effectively the entire High Republic writers' room on one book.
The line continued at Dark Horse for Phases II and III. Those runs are catalogued under their publisher; this entry covers the IDW issues only.