7DS Origin | Act 9 - Where the Dead Rest Walkthrough | The Seven Deadly Sins: Origin

Act 9 - Where the Dead Rest Walkthrough

Last Updated: March 27, 2026 3:18 AM

Act 9 Main Story Walkthrough Guide for Seven Deadly Sins Origin (7DSO). This guide includes a main quest walkthrough, puzzle guides, objectives, and more.

Early Game Guide	Daily Missions	Missable Content	Book of Stars
Gimmicks & Puzzles	Best Team Comps	How to Recover HP	Daily Missions
Character Upgrades	Weapon Upgrades	Enchant Guide	Boss Guides

7DSO Story Walkthroughs
Act 0 - 1	Act 2	Act 3
Act 4	Act 5	Act 6
Act 7	Act 8	Act 9
Act 10	Act 11	Act 12

Main Story Walkthrough Guide

Table of Contents

Act 9 Walkthrough
Act 9 Bosses Guide

Act 9 Walkthrough

Step	Objective
1	Talk to the Liones Soldier Reno
2	Go to Post Town Tala
3	Talk to the Ghost(?)
4	Enter the Village
5	Talk to Martha
6	Collect Ingredients and Give Them to Martha
7	Find Landos and Return to Martha
8	Chase After Hawk
9	Check the Things that Guila Left Behind
10	Return to Luigi and Ellen
11	Check the Wild Dragon, Then Fly to the Crystal Formation
12	Check the Corrupted Crystal
13~15	Purify the Crystals ▼ Purification Crystal location
16	Return to Luigi and Ellen
17	Recharge Book of Stars Before Looking for Guila
18	Enter the First & Second Portals, Then Glide Through Windways - You can skip to the fourth portal by jumping using a Riding Pet or jumping and gliding towards it
19	Enter the Third and Fourth Portal Then Glide Through Windways
20	Enter the Fifth Portal - A sixth blue portal can be found below, and entering it reveals a puzzle that can give a chest. ▼ Blue Portal Detour
21	Defeat the Enemies Then Purify the Abyss Flower
22	Enter the Final Portal and Defeat Guila
23	Return to Luigi and Ellen
24	Talk to Guila in the Oasis Village

Purification Stone Location in the Village

Since this is a special quest area, the Map menu cannot be opened. The Purification Stone to switch the Book of Stars is found next to another big crystal formation on the right of the village when you enter the village.

Blue Portal Route

Step	Objective
1	After solving the puzzle and obtaining chest, go behind the monument and jump then glide to reach the Purification Stone to switch back the Book of Stars.
2	Glide back to the original platform
3	Return to the platform where the portal was by gliding through the Windway
4	Glide towards the platform with an Abyss Flower to return to step 21

Act 9 Bosses Guide

Avoid Sticking Near the Boss

The boss uses rapid, powerful attacks and has frequent AoE. Bringing ranged or mid-ranged DPS characters will prevent Guila from doing most of her attacks aside from her few ranged attacks.