Hikaru is an angel created by a junior high school student named Misaki (Misakchi). When Misaki made Hikaru she wanted her to be a speedy type. Hikaru made Misaki a miracle rookie by being the best that she can be. She made Misaki the champion of Angelic Layer.    Hikaru also makes an appearance as the last fighter in chess in the Tsubasa manga.

"The world is a very small place, but for those who know it...it is very, very large. And the world, when it is viewed by those who 'know'&mdash; is far larger than just one world can hold!" 
The famous CLAMP brings back the characters from all their creations for an ultimate showdown in this multi-dimensional tale. 
This is the story of four travelers, bound by fate and by prophesied future. Sakura is the princess of Clow Country, and possessor of a strange power that promises to change the world. Syaoran is an aspiring archaeologist and her childhood friend. When Sakura is endangered by the plan a certain man has for the future, the princess' memories are scattered across dimensions in the form of feathers, and Syaoran is forced to go on a desperate journey to retrieve them. They are accompanied by Fay D. Flourite, a magician running from the horrible truth of his past, and Kurogane, a rough-mannered ninja trying to get back to his world. However, the ability to cross worlds demands a great price, and each of them must pay the Dimensional Witch with what he or she values most. In order to save his princess, Syaoran must give up his relationship with her. Even if he gathers all of Sakura's memories, she will never remember their past together... 
But the world is not so simple. The very moment these four made this decision, their destinies are sealed into a tragic course...as everyone in the group has their own secrets. Visions of the future are seen, and prophesies are made. The cruel future which lies ahead reads only of betrayal, abandonment, devastation and anguish.

In the future, the most popular game in the world is Angelic Layer. Contestants must raise and train their own 'Angels' (or fighting dolls) to compete in tournaments. Enter Misaki Suzuhara, sixth grade Angelic Layer prodigy. With her speed-type angel, Hikaru, many people think Misaki stands a chance at winning the championship. She'll have a lot of help along the way, but the road to victory will be not be an easy route, especially for someone as young as Misaki. 
(Source: Tokyopop)
 
Note: Includes two side stories.

From the moment twelve-year-old Misaki Suzuhara first arrives in Tokyo to live with her aunt, she finds herself swept away by the amazing world of Angelic Layer – a fast-paced high-tech game where dolls called “Angels” are controlled by the thoughts of their operator, or “Deus”. Discovering that her new friends are as interested in Angelic Layer as she is, Misaki builds her own Angel, Hikaru, and begins competing in battles where will and determination count far more than size and strength. The competitions are going to be fierce and, with the national championships looming on the horizon, you can bet that not everyone Misaki meets will be on her side. Can Misaki handle the pressure of non-stop competition while struggling to adapt to life in an unfamiliar city? 
 
(Source: Sentai Filmworks)

A short animation which features clips from all of CLAMPs works between 1995 and 2006.