The Rarest Book is an item in Tales of Arise that’s needed to complete Sub-Quest Bibliophile.
How to Get Rarest Book
The Rarest Book is actually the “Heavenly Gaze” craftable weapon for Rinwell. She uses books as her weapon, because she’s a mage and casts spells. You can craft it at any merchant in the game, who are found at any campfire.
This is the exact item you need to craft – called Heavenly Gaze:
It’s the 2nd best craftable weapon in the game for Rinwell. However, it doesn’t unlock until much later in the game. It unlocks through normal story progress near the end of the story (about 20-30 hours playtime after Menancia). So if you don’t see it in your crafting options yet, it’s normal and you need to check back later.
Crafting the Rarest Book requires the following materials (including enemies that drop them and location where the enemies spawn):
- Mystical Luminacore x6- obtained from: Blooming Roper (The Wedge), Treant Roper (The Otherworld), Magmalem (Berg Volcano), Gnome Guarder (Earth Spirit Temple), Lavalem (The Otherworld), Chrome Gazer (Gegham Helgarahi), Astral Agony (Tarfhal Helgarahi), Astral Doubt (Tarfhal Helgarahi), Punisher (The Otherworld), Flaming Mass (Berg Volcano), Astral Lament (Tarfhal Helgarahi), Helganquil (Gegham Helgarahi, Tarfhal Helgarahi)
- Ominous Eyeball x2- obtained from: Astral Sloth (Tarfhal Helgarahi), Mash Boomy (The Otherworld)
- Incendiary Scale x2- obtained from: Blast Bee (Gegham Helgarahi), Bee Prisma (The Otherworld)
All of these are endgame areas. You will enter some of the mentioned areas at the end of the story.
Where to Use Rarest Book
The Rarest Book is given to the librarian that offers you the quest Bibliophile. This quest takes place in Menancia > Auteliana Palace (1F) > Library. The other 3 books that the woman wants are also craftable weapons for Rinwell.
That’s all there is to unlocking the Rarest Book in Tales of Arise.
For more guides, check out the complete Tales of Arise Wiki & Strategy Guide.