The last of the main Arifureta novels starts out much like Tensura’s fifteenth novel; showing the battle going on outside the Sanctuary from multiple different perspectives.
That ends up taking quite some time, with most of the rest being spent on Hajime’s confrontation with Ehit… leaving little space for any kind of epilogue. So really, while this book serves as a solid enough conclusion to the Tortus conflict (and even Arifureta Zero due to the second epilogue) it’s less useful as a finale to Hajime’s and the other students’ story.
No, for that you’ll have to read on into the Arifureta After chapters which were started around the time the fifth novel was published and are still ongoing even now (with allegedly one more arc to go before completion). Although mainly urban fantasy, they cover the protagonists’ return to Earth and related continued adventures in rather expansive detail across multiple genres including some more fantasy and even a couple sci-fi arcs.
Only the unedited original web version is currently available however, so be prepared for a highly variable level of both quality and chronological progression. Some arcs are hilarious, others are painful, and very few of them occur in the order they were written.
Tentative chronological order for the various arcs (the one-offs are all over the place):
School Festival Arc 1-3
Shizuku Arc 1-4
Tio Arc 1-17
Tortus Travel Arc 1-60
Brutal Hero Shia Arc 1-14
Kaori & Yue Arc 1-5
Abyss Lord Arc 1-27
Shia Arc 1-6
The Two At That Time 1-2
The Haulia Came Arc 1-3
Abyss Lord Chapter 2 Arc 1-19
Kouki Arc 1-18
Hero & Demon King Arc 1-8
Hero & Demon King Arc Sequel 1-8
School Trip Arc 1-3 (Mundane School Life 2-4)
Abyss Lord Chapter 3 Arc 1-24
As the Daughter of Demon King Arc 1-5
Liliana Arc 1-5
Fleur Knights Arc 1-3 (Chapters 294, 296, & 297)