Ayumu Aizawa who can't recall his childhood. He doesn't suffer from amnesia but his younger days are a mystery to him.
When asked to spend the summer with his father in Tana, a rural town two hours away from his home in Tokyo, Ayumu refuses as he has not seen his divorced father in four years. He gets bribed by his mother with a mountain bicycle and reluctantly agrees.
Unbeknownst to him, this fateful trip will put together bits of his past. Soon after arriving at Tana, Ayumu encounters strange happenings such as meeting a mysterious boy called Wakkun, who lives in an enchanted forest, and floating orbs of lights appearing in the sky.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | The Beginning of a Depressing and Strange Summer | 2005-05-21 | 25 min |
| Season 1 | Episode 2 | The Tsukiyomi Observatory and Old Lady Okaka | 2005-05-28 | 25 min |
| Season 1 | Episode 3 | Arrival of the Distinguished Announcer | 2005-06-04 | 25 min |
| Season 1 | Episode 4 | Shrine of the Luminating Woods | 2005-06-11 | 25 min |
| Season 1 | Episode 5 | Weight of a Promise and Lightness of a Dream | 2005-06-18 | 25 min |
| Season 1 | Episode 6 | The Shroud of the World Becomes Thin | 2005-06-25 | 25 min |
| Season 1 | Episode 7 | The Night of the Third Promise | 2005-07-02 | 25 min |
| Season 1 | Episode 8 | Within the Narrowness of Trancession and Remembrance | 2005-07-09 | 25 min |
| Season 1 | Episode 9 | It is Always the Problem of Priorities | 2005-07-16 | 25 min |
| Season 1 | Episode 10 | The Thinking Which Becomes Complicated in the Rain | 2005-07-23 | 25 min |
| Season 1 | Episode 11 | Run to Tana, Which is on the Verge of Tears | 2005-07-30 | 25 min |
| Season 1 | Episode 12 | Dancing About the Sky of the Cat Dance | 2005-08-13 | 25 min |
| Season 1 | Episode 13 | Tanigawa Kisa and a Presence You Don't Get Used To | 2005-08-20 | 25 min |
| Season 1 | Episode 14 | Two Competing Powers | 2005-08-27 | 25 min |
| Season 1 | Episode 15 | Urban Folklore | 2005-09-03 | 25 min |
| Season 1 | Episode 16 | Can't Be Seen with the Eye, The Gigantic Something | 2005-09-10 | 25 min |
| Season 1 | Episode 17 | That is a Problem You Can't Participate In | 2005-09-17 | 25 min |
| Season 1 | Episode 18 | Meeting and Despair of Seventeen Year Olds | 2005-09-24 | 25 min |
| Season 1 | Episode 19 | Wings of the Grown-up Fish | 2005-10-01 | 25 min |
| Season 1 | Episode 20 | Material Fairies | 2005-10-08 | 25 min |
| Season 1 | Episode 21 | What Being a Good Child Means | 2005-10-15 | 25 min |
| Season 1 | Episode 22 | That Which Vanished and That Which Was Born | 2005-10-22 | 25 min |
| Season 1 | Episode 23 | The Dark Light That Brings Happiness | 2005-10-29 | 25 min |
| Season 1 | Episode 24 | The Girls' Small Adventure | 2005-11-05 | 25 min |
| Season 1 | Episode 25 | The World's Membrane is Full of Holes | 2005-11-12 | 25 min |
| Season 1 | Episode 26 | The End of a Dependant and Rich Winter | 2005-11-19 | 25 min |
| Sound | Masumi Itou | Theme Song Performance |
| Art | Katsufumi Haryu | Art Direction |
| Sound | Masumi Itou | Original Music Composer |
| Writing | Kazunori Ito | Series Composition |
| Visual Effects | Miyoko Ichinose | Color Designer |
| Visual Effects | Masayuki Sekine | Character Designer |
| Visual Effects | Masayuki Sekine | Supervising Animation Director |
| Writing | Kazunori Ito | Original Story |
| Directing | Tomomi Mochizuki | Director |
