
The Tsubasa: Reservoir Chronicle manga by Clamp inspired two original video animation (OVA) series animated by Production I.G. They were directed by Shunsuke Tada and written by Nanase Ohkawa, with music provided by Yuki Kajiura. A three-episode OVA series titled Tsubasa Tokyo Revelations was released between November 16, 2007, and March 17, 2008, across three DVDs bundled with limited versions of volumes 21, 22, and 23 of the manga. Their plot is set after the anime's ending, and follows the arrival of Syaoran's group in a postapocalyptic Tokyo, where the connection between Syaoran and a teenager identical to him is revealed.

Tsubasa: Reservoir Chronicle is a Japanese manga series written and illustrated by the manga artist group Clamp. It takes place in the same fictional universe as many of Clamp's other manga series, most notably xxxHolic. The plot follows how Sakura, the princess of the Kingdom of Clow, loses all her memories and how Syaoran, a young archaeologist who is her childhood friend, goes on arduous adventures to save her, with two other companions. The Dimensional Witch Yūko Ichihara instructs him to go with two people, Kurogane and Fai D. Flowright. They search for Sakura's memories, which were scattered in various worlds in the form of angelic-like feathers, as retrieving them will help save her very being. Tsubasa was conceived when four Clamp artists wanted to create a manga series that connected all their previous works. They took the designs for the main protagonists from their earlier manga called Cardcaptor Sakura.

The chapters of the manga series Tsubasa: Reservoir Chronicle were written and illustrated by Clamp, a creative team of four manga authors. The series premiered in Japan in Weekly Shōnen Magazine in May 2003, and after 233 chapters, ended in October 2009. The plot follows Sakura, the princess of Clow Kingdom, and Syaoran, a young archaeologist and her childhood friend, on a quest to recover Sakura's memories, which have been scattered throughout many worlds in the form of feathers. Dimensional Witch Yūko Ichihara sends them with two people who also have wishes that require travelling through worlds, Kurogane and Fai D. Flowright, and Mokona, a magical creature with the power to transport them through dimensions.

The Tsubasa: Reservoir Chronicle manga series and its respective animated adaptations feature a large cast of fictional characters designed by Clamp. The series takes place in a fictional multiverse with parallel dimensions where several characters – taken from many of Clamp's past works – can appear in several of the universes as having the same character names and designs but differing histories and settings.

Chi is a fictional character in the manga series Chobits and its anime adaptation. Chi is a Chobit, a type of personal computer called a persocom that is far more technologically advanced than regular persocoms, and who are said to possess true machine intelligence rather than relying on software programs like other persocoms. She is found by Hideki, a high school graduate who has no idea about her unique abilities or of her past. Over the course of the series Hideki tries to discover what type of persocom Chi is, being told that she is something special. He finds her a job, and has to deal with her being kidnapped at one point. Chi learns about the things around her and what it means to be in love. At the end of the series, Chi finds the person "just for her", and her forgotten identity is revealed, causing Hideki to confront his feelings.

Tsubasa: Reservoir Chronicle, a manga by Clamp, has been adapted into four different anime versions between 2005 and 2009, including a two-season anime television series, an anime film, and two original video animation (OVA) series with screenplay provided by Nanase Ohkawa and music composed by Yuki Kajiura. Bee Train adapted the manga series into a fifty-two-episode anime entitled Tsubasa Chronicle directed by Kōichi Mashimo with Hiroshi Morioka joining on as co-director for season two. Hiroyuki Kawasaki scripted both seasons. Production I.G adapted the manga series into both an anime film entitled Tsubasa Chronicle the Movie: The Princess of the Country of Birdcages directed by Itsuro Kawasaki and two OVA adaptations directed by Shunsuke Tada entitled Tsubasa Tokyo Revelations and Tsubasa Shunraiki. Set in a fictional universe involving alternative realities, the story follows a group of five travellers—Syaoran, Sakura, Kurogane, Fai D. Flourite, and Mokona—as they search for fragments of Sakura's memory that take the form of feathers of great power and without which, Sakura will die. The series features much crossover with its sister series xxxHolic, another manga by Clamp.

Tsubasa: Reservoir Chronicle, known in Japan as Tsubasa Chronicle , is a Japanese anime television series based on the manga series of the same name created by Clamp. The plot follows how Sakura, the princess of the Kingdom of Clow, loses all her memories and how Syaoran, a young archaeologist who is her childhood friend, goes on arduous adventures to save her, with two other companions. The Dimensional Witch Yūko Ichihara instructs him to go with two people, Kurogane and Fai D. Flowright. They search for Sakura's memories, which were scattered in various worlds in the form of angelic-like feathers, as retrieving them will help save her very being.

Tsubasa: Reservoir Chronicle, known in Japan as Tsubasa Chronicle , is a Japanese anime television series based on the manga series of the same name created by Clamp. The plot follows how Sakura, the princess of the Kingdom of Clow, loses all her memories and how Syaoran, a young archaeologist who is her childhood friend, goes on arduous adventures to save her, with two other companions. The Dimensional Witch Yūko Ichihara instructs him to go with two people, Kurogane and Fai D. Flowright. They search for Sakura's memories, which were scattered in various worlds in the form of angelic-like feathers, as retrieving them will help save her very being.

Fai D. Flowright , born Yūi (ユゥイ), is a fictional character introduced Clamp's manga series Tsubasa: Reservoir Chronicle. Fai is a sorcerer from the country of Celes who escapes in order to request the witch Yuko Ichihara to travel to other world and never return to his homeland. He meets Syaoran, Sakura, Kurogane and Mokona in their journey whom he gets along. Despite his easygoing nature, Fai's true objective remains hidden caused as often foreshadowed by the trauma behind his childhood which is further explored when the character is forced to return to his world alongside the group.

Yuko Ichihara is a fictional character in the manga xxxHolic, which was created by the artist group Clamp. Yuko is a witch who owns a shop where people come to have their wishes granted, and most of her jobs involve dealing with supernatural beings. At the beginning of xxxHolic, she meets Kimihiro Watanuki, who becomes her assistant in exchange for removing spirits that follow him. Yuko also appears in the crossover manga Tsubasa: Reservoir Chronicle, where she assists the main characters in their journey across the multiverse, and is known as "The Dimension Witch" . She has also appeared in animated versions of the two series, as well as in other media.

Sakura Kinomoto is the main protagonist and title character of Clamp's manga series Cardcaptor Sakura. In the English anime adaptation by Nelvana of the series, Cardcaptors, she is known as Sakura Avalon, though her surname was changed back in the second film's dub by Bang Zoom! Entertainment.

Kurogane , born Yōō (鷹王), is a fictional character from Clamp's manga Tsubasa: Reservoir Chronicle. Kurogane is a poor tempered ninja from Japan who is obsessed with fighting. His lord, Princess Tomoyo, exiles him to modern Japan where Kurogane joins with the wizard Fai D. Flowright and two teenagers known as Syaoran and Sakura who are in the need of travelling different dimensions. The witch Yuko Ichihara gives them such power at the cost of their most treasured item with Kurogane giving his sword. Across the narrative, Kurogane bonds with the other travelers and learns that his parents were killed by the same people who attacked Syaoran and Sakura's country, making him look for revenge. He also makes cameos in other Clamp's works.

Fuma Monou , also written Fuuma Monou, is a fictional character created by the artists Clamp introduced in their manga series X. Fuma appears to be an ordinary, young teenager who is friends with protagonist Kamui Shiro. However, his frequent encounters with Kamui and Kamui's divine power has made him develop a cold-blooded alter-ego, who joins the seven men organization Dragons of Earth to eliminate mankind, preserve the Earth and kill Kamui's own group, the Dragons of Heaven. Fuma also appears in an animated film and television series based on the manga, both of which have a different outcome because Clamp did not finish the X manga. An alternative version of the character has appeared in the Clamp's manga, Tsubasa: Reservoir Chronicle, as a rival of another Kamui.

Sakura (サクラ), also known as Princess Sakura , is a fictional character and one of the protagonists from Tsubasa: Reservoir Chronicle, a manga series written and illustrated by Clamp. In the series, Sakura is a princess from the Kingdom of Clow who has her memories separated from her body and sent to parallel dimensions in the form of feathers. Finding Sakura catatonic and near death, Syaoran, her childhood friend, goes on a quest to recover her memories. As the journey continues, Sakura forms new bonds with Syaoran, and together they learn how the sorcerer Fei-Wang Reed was responsible for the loss of her memories and will benefit from their recovery. Besides Tsubasa: Reservoir Chronicle, Sakura also appears in other works from Clamp including xxxHolic and the drama CD series Holitsuba.

Seishiro Sakurazuka is a fictional character that was created by Clamp and first appeared in the manga Tokyo Babylon. He appears as a kind veterinarian who shows romantic affection for the young exorcist Subaru Sumeragi. During the story, it is revealed he is the Sakurazukamori , Japan's number-one assassin who is targeting Subaru. The character returns in the apocalyptic manga X as a combatant in the battle of Armageddon, a Dragon of Earth and Subaru's rival. An alternative version of Seishiro appears in Clamp's crossover series Tsubasa: Reservoir Chronicle as a young treasure hunter who is searching for two vampires, one of whom is an alternative version of Subaru.

Kamui Shiro , also written as Kamui Shirou, is a fictional character that was created by Clamp and introduced as the protagonist of the manga series X. Kamui is a young esper who returns to his home, Tokyo, after a six-year absence following his mother's last will. According to her, he can change the world's fate. He can either join the groups a Dragons of Heaven or Dragons of Earth and fight for mankind or the nature, respectively. Kamui has also appeared in the animated adaptations of X, in which he follows a different course of action, and he also appears as an alternative persona from a post-apocalyptic Tokyo in the manga Tsubasa: Reservoir Chronicle.

Syaoran is a fictional character and protagonist in Tsubasa: Reservoir Chronicle, a manga series written and illustrated by Clamp. Syaoran is introduced as a young archaeologist who is in love with Sakura, his childhood friend and the princess from the Kingdom of Clow. When Sakura's memories are scattered throughout parallel dimensions, Syaoran goes on a quest to recover them, at the cost of Sakura never remembering him. Later in the series, Syaoran is revealed to be an artificial human created by the sorcerer Fei-Wang Reed—the sorcerer who wants to use him to collect Sakura's magical feathers. Controlled by Fei-Wang Reed's will, Syaoran becomes one of the series' antagonists in the second half of the series. Syaoran has featured in other works by Clamp, including the manga xxxHolic and the drama CD series Holistuba.

Tsubasa (ツバサ), usually called Syaoran is a fictional character from Clamp's manga series' Tsubasa: Reservoir Chronicle. In the series, the character is initially seen as child imprisoned by the sorcerer Fei-Wang Reed and appears in visions of the series' protagonist, the clone Syaoran. Upon being freed from his prison, Syaoran goes to kill his doppelgänger but fails as he escapes to carry Fei-Wang's will. As a result, Syaoran decides to join Sakura's journey across dimensions to accomplish his own mission. Syaoran also appears in the Clamp's series xxxHolic, where he often interacts with the teenager Kimihiro Watanuki whom he often sends messages to and in the Tsubasa spin-iff Tsubasa World Chronicle: Mirai Nikki-Hen he goes in another journey to find his clone.

"Synchronicity" is a maxi single performed by Yui Makino first released on November 21, 2007 by Victor Entertainment under the catalog number VTCL-35007. The lyrics, composition, and arrangement for the single are provided by Yuki Kajiura, Makino Yui, Caoli Cano and Shunsuke Takizawa. It contains 3 tracks in both regular and instrumental versions. The track "Synchronicity" was featured as the opening theme to the OVA adaptation Tsubasa Tokyo Revelations. Its B-side is titled "Amrita: Hikigatari" . It peaked at number 49 on the Oricon singles chart and remained on the chart for three weeks.

Kimihiro Watanuki is a fictional character introduced in the manga xxxHolic, created by the group of manga artists known as Clamp. Watanuki is a high school student plagued by his ability to see spirits. In order to lose such powers, Watanuki begins to work for Yūko Ichihara, a witch who will grant his wish once he pays the price for her services. Such jobs often involve Watanuki encountering other spirits attracted by him. Apart from xxxHolic, Watanuki is featured in the crossover manga Tsubasa: Reservoir Chronicle, which explores his origins. He has also has been featured in their animated adaptations, spin-offs as well as other works by Clamp, most notably the sequel xxxHolic Rei.