You’ll need to complete Naoe’s personal questline first.

you’ve got the option to find these with ourKuji-Kiri locations in Izumi Settsuguide.

Head to the marker at an area in Yamashiro called Little Leaf Glade.

Naoe perched on a rooftop in Assassin’s Creed Shadows. She wears the epic Apprentice Armor set, which resembles the design and colour scheme of outfits worn by the Brotherhood of Assassins.

This then begins the next quest,Secrets of the Blade.

Make your way back to the Old Kofun and retrace your steps.

you’ll need to crawl through gaps, swim underneath caverns and swing across chasms with your grappling hook.

The world map of Assassin’s Creed Shadows, showing a highlighted point in the middle with a check mark and green brackets, with a text box to the right reading ‘Old Kofun’.

Inside, you’ll find corpses of presumably the Igan clan, who have been dead for years.

Keep following the path and you’ll come across another stone door with the insignia.

And now it’s yours!

Naoe standing in front of the NPC Tokugawa in Assassin’s Creed Shadows.

Once you’ve got the goods, you won’t be able to fast travel out of Old Kofun.

But as you leave the tomb, there’s a blocked path that also has a red pot.

You’ll also find Yasuke waiting for you as this questline continues.

Naoe standing in front of a mannequin dressed in the Apprentice Assassin armor in Assassin’s Creed Shadows.

That’s it for this Apprentice Assassin armor set guide inAssassin’s Creed Shadows.