After rescuing Yuri at the Lake of the Beyond, Miu returns to the antique shop.
Deeply convinced that her mother, "Miku Hinasaki," must be on Mt. Hikami, she resolves to follow her shadow.
However, if she wishes to pursue her mother's shadow, she needs Yuri's Camera Obscura.
Location: Antique Cafe Kurosawa
Miu: 'Back then, mother's figure vanished deep within the graveyard... if I investigate with that Camera Obscura... maybe I can find out something. I'll go borrow it again.'
Heading to Hisoka's room, she uncovers the document Hisoka's Notebook 3 from the desk.
Heading to Yuri's room, she obtains the Camera Obscura, Missing Person: Miku Hinasaki, Photograph of Miku Hinasaki, and Yuri's Notebook 2 from the desk.
Miu: 'With this Camera Obscura, I can bring mother back. If I track her presence using her photograph... I'll definitely be able to see her.'
Walking out into the hallway toward Hisoka's room, a specter can be seen outside the glass window: Hanging Woman (Deep Corridor).
Descending the stairs in front of Yuri's room to the courtyard corridor, a specter appears outside the window ahead: Shrine Maiden Standing in Shadows.
Following the path to the shop area, she exits the main doors of the antique cafe and heads toward Mt. Hikami...
Location: Mt. Hikami Cable Car
At the start inside the cable car, looking out the right window reveals a specter: Shadow Standing on Stairs.
Location: Unveiled Palace
Leaving the cable car and exiting the station, she follows the trail to the front path of the Unveiled Palace on the deep mountain path, spotting a trace: Miku Hinasaki Walking on Side-Path.
Following it into the Yomotsu Road triggers an encounter with two hostile spirits: Flame Keeper. After defeating them, she follows the path into the Vale of Shadows.
Location: Vale of Shadows
Advancing along the path to the front of the Unconsecrated Graveyard, she spots a trace: Miku Hinasaki Advancing in Vale of Shadows.
Following her to the upper-right Lycoris Path, she catches a final trace: Miku Hinasaki Heading to Ghost Marriage.
At this point, the previously blocked path at the end opens up, granting entry into the House of Joining.
Location: House of Joining
Advancing to the entrance of the House of Joining, she spots a trace: Miku Hinasaki Entering House of Joining.
On the ground at the entrance, she collects the document Miku's Note 2.
Entering the Altar of Votive Tablets, a specter passes through the corridor to the left: Old Woman Beckoning Inside (Circular Window Corridor).
To the right side of the altar, she uncovers Upgrade Lens: Bind from the ground.
Stepping into the left Circular Window Corridor where she just saw the old woman and reaching the fork, she spots a specter in the left passage: Kazuya Sakaki.
Following him into the Storage Room, she takes the stairs on the opposite side up to the second floor.
Reaching the second-floor hallway, she spots a specter at the crossroads: Kazuya Sakaki.
Entering the Room of Watchers and opening the small wooden window on the wall reveals Ren sleeping there...
Soon after, the hostile spirit Kazuya Sakaki attacks.
Exterminating him allows her to collect the document Ren's Note from the inner guest room.
Returning to the first-floor Circular Window Corridor and entering the Banquet Hall to the right of the fork, she investigates the door to the right of the folding screen, only to find it sealed shut by an immense power.
Photographing the glow on the door yields a Psychic Vision: Bride before Dressing Table.
Returning to the Circular Window Corridor and entering the left Kimono Room at the end, she peers inside behind the kimono screen to discover a trace of Miku. Suddenly, the sealing presence on the door vanishes!
Returning to the Banquet Hall and eliminating the manifested hostile spirit Inori Mizukago (Alive), the door to the right of the screen can now be opened.
Stepping out into the corridor and walking left along the path to the spot where Ren previously met Ren, she spots a specter: Old Woman Beckoning Inside.
Heading left into the Kimono Room first, back to the spot where she just saw Miku, she discovers Miku standing there.
The moment Miu approaches Miku, she turns into the hostile spirit Inori Mizukago (Alive)...
Defeating her yields the document Miku's Note 3.
Returning to the courtyard garden, she continues straight to the end, passing through the lounge into the Hall of Joined Souls, where she discovers a casket.
Miu approaches, intending to open it.
At that moment, the hostile spirit Yuri (結女) materializes.
She declares: 'The person you seek has already completed the Ghost Marriage. It is an occasion truly worth celebrating. As a Child of the Night-Spring yourself, you too must fulfill your destiny to become a pillar.'
With these words, the hostile spirit Yuri lunges forward to attack.
Defeating her yields the document Black-Covered Notebook.
Opening the black box inside the room, she rescues her mother, "Miku Hinasaki," who was sealed within.
The moment Miu touches Miku, she senses her mother's deepest secrets via resonance.
Miku's inner voice echoes: 'My life is fading fast. If only I could return to that time once more, if only I could stay frozen in that moment forever... that is... my final wish.'
Miu: 'Mother... Mother!'
Miku: 'Miu, let me...'
Miu: 'No! I won't allow it! Come back with me!'
Miku: 'Miu, I am already...'
Miu cries: 'Let's go home together! Let's go home, please!'
Supporting Miku, Miu retraces her steps through the house,
exterminating any hostile spirits that cross their path, exiting the House of Joining to head down the mountain back to the antique cafe...
Location: Antique Cafe Kurosawa
The two drift into slumber, holding each other close.