Maiden's Heart & Evening Sky

A Hidden Demon

Yuuko

Afterschool Quicksilver

The Beckoning Window

Spirited Away

Yuuko of the Dusk I

Yuuko of the dusk II

Takamatsu-san and Kakizaki-kun

Extra 

The Six Year Sakura, Part 1

The Six Year Sakura, Part 2

The Six Year Sakura, Part 3

Ghost of the Night Duty Room

Yuuko-san of the Toilet

The Rock of Curses

Shadow Yuuko

Yuuko, Alone

I'm Back I

I'm Back II

The Two Yuukos

Who Are You?

Amnesia

The Shadow's Tracks

Heartless Anatomy Model

Haunted House

Akahito-san (1)

Akahito-san (2)

Akahito-san (3)

The Voice at Six O'Clock

Bare legs in the twilight

The Interdimensional 13 Steps

The Deceased's Will

The Room of Locked Up Memories

Shower Room of Fresh Blood

The Black Painting

Curse (1)

Curse (2)

Ghost's Sickness are Sicknessses of the Heart

The Last of the Seven Mysteries

The Unopenable Locker

Yuuko-san's Ghost Photo

The Final Case

To The Past

The Shadow's Memories (1)

The Shadow's Memories (2)

The Day Teiichi-kun Never Came

The Shadow's Memories (3)

The Shadow's Memories (4)

The Shadow's Memories (5)

After the Grudge

Traces of Dusk

The Classroom of the Dead

Hey, Did You Know?

Epilogue - Slit-Mouthed Woman (1)

Epilogue - Slit-Mouthed Woman (2)

Legend states that the ghost of a student who died at Seikyou Private Academy still haunts the grounds to this day... A truth that first year student Teiichi uncovers when he stumbles into that very ghost, Yuuko! However, with no memories of her previous life, she enlists the help of Teiichi and opens a paranormal investigations club to unravel the school’s ghastly mysteries. From Maybe, the author of "Tales of Wedding Rings".
<br><br>
(Source: MANGA UP! Global)