Set in a fictional European country in 1924, a Japanese exchange student meets a mysterious, brilliant girl who only leaves the library to sleep. Her brother, a detective, relies on her exceptional mind to solve difficult mysteries.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | The Dark Reaper Finds the Golden Fairy | 2011-01-07 | 25 min |
| Season 1 | Episode 2 | The Souls of the Dead Raise a Shipwreck | 2011-01-15 | 25 min |
| Season 1 | Episode 3 | The Hares Break Promises Beneath the Morning Sun | 2011-01-21 | 25 min |
| Season 1 | Episode 4 | The Golden Thread Cuts Through a Passing Moment | 2011-01-28 | 25 min |
| Season 1 | Episode 5 | A Mysterious Ghost is in the Abandoned Warehouse | 2011-02-04 | 25 min |
| Season 1 | Episode 6 | The Gray Wolves Summon Their Brethren | 2011-02-11 | 25 min |
| Season 1 | Episode 7 | A Divine Revelation is Given at the Summer Solstice Festival | 2011-02-18 | 25 min |
| Season 1 | Episode 8 | Howling Echoes from the Kingdom of the Past | 2011-02-25 | 25 min |
| Season 1 | Episode 9 | A Blue Rose Blooms in a Cannibal Department Store | 2011-03-04 | 25 min |
| Season 1 | Episode 10 | Girl With Cold Dreams of Her Stubborn Friend | 2011-03-18 | 25 min |
| Season 1 | Episode 11 | The Drill Speaks Eloquently of Love | 2011-04-02 | 25 min |
| Season 1 | Episode 12 | Listening to the Cicadas on a Summer Afternoon | 2011-04-09 | 25 min |
| Season 1 | Episode 13 | A Fool Designates His Own Mouthpiece | 2011-04-16 | 25 min |
| Season 1 | Episode 14 | A Malicious Frill Denounces a Farting Newt | 2011-04-22 | 25 min |
| Season 1 | Episode 15 | Two Monsters See Eye to Eye | 2011-04-30 | 25 min |
| Season 1 | Episode 16 | The Toppled Maria has a Fly's Head | 2011-05-07 | 25 min |
| Season 1 | Episode 17 | The Box Lies in the Spiral Labyrinth | 2011-05-13 | 25 min |
| Season 1 | Episode 18 | The Jet-Black Train Carries Several Lies | 2011-05-20 | 25 min |
| Season 1 | Episode 19 | The Rose-Colored Life is Covered in New Snow | 2011-05-27 | 25 min |
| Season 1 | Episode 20 | Guided by the Phantom's Ghost | 2011-06-03 | 25 min |
| Season 1 | Episode 21 | The Bells of Cristmas Eve Toll at the Heels of Time | 2011-06-10 | 25 min |
| Season 1 | Episode 22 | A Christmas Carol Decorates the Windowsill's Happiness | 2011-06-17 | 25 min |
| Season 1 | Episode 23 | Call Checkmate on an Ash-Colored Chessboard | 2011-06-24 | 25 min |
| Season 1 | Episode 24 | Looking at Infinity over the Grim Reaper's Shoulder | 2011-07-02 | 25 min |
| Production | Junka Kobayashi | Producer |
| Production | Yoshikazu Beniya | Producer |
| Visual Effects | Toshihiro Kawamoto | Character Designer |
| Visual Effects | Takashi Tomioka | Character Designer |
| Directing | Namimi Sanjo | Series Director |
| Writing | Mari Okada | Series Composition |
| Sound | Kotaro Nakagawa | Original Music Composer |
| Visual Effects | Takashi Tomioka | Supervising Animation Director |
| Writing | Kazuki Sakuraba | Novel |
