Sera (セラ Sera), also known by her Neurons avatar Prana (プラナ Purana), is a character in Yu-Gi-Oh! The Dark Side of Dimensions and "TRANSCEND GAME".

As one of the main users of the power known as Prana, Sera was granted supernatural powers and abilities, which gave her the ability to move between different dimensional spaces, even virtual ones, to bend the dimensions to a certain extent, creating spaces controlled by this power. Where she could create traps and force a duel with her opponent.

Sera, her brother, Diva, Mani and other orphans lived with an abusive man, until Shadi Shin arrived, granted them the power of the Prana and killed the man.[2]

One day, when Shadi was teaching the kids about the Millennium Items, Dark Bakura murdered Shadi, along with some of the orphans, with Aigami, Sera, and Mani the only survivors. Aigami, Sera and Mani resided with a group of children, in the Prana Realm. Aigami and Sera decided to leave one day and went with a group of children. Mani also left to keep an eye on them.[2]

Sera was in Egypt alongside her brother Aigami and their companion, Mani. She watched from afar as Yugi and his friends reminisce on all that had happened since they first met. She recalled how she and Aigami were orphans in Egypt many years ago, and how they had met Mani. After Aigami's Duel with Kaiba, Aigami managed to get two pieces of the Millennium Puzzle, which Kaiba was trying to reassemble, and gave a piece to Sera.[2]

She then went to the Kame Game shop, where she showed Yugi the Prana Realm. She disappeared, giving Yugi her piece of the Millennium Puzzle.[2]

When Yugi was about to get hit by a car, Sera saved him, and teleported him to safety. She told Yugi that it was his choice whether he should complete the Millennium Puzzle, and requested Yugi to save her brother. Sera later appeared before Aigami and apologized, but still maintained that she made the right decision by giving Yugi a piece of the Puzzle.[2]

Sera and the other Prana children observed the Duel between Yugi and Kaiba over the pieces of the Millennium Puzzle. When Yugi completed the Puzzle, she was surprised to see that the Pharaoh had not returned.[2]

Dark Diva interrupted the Duel and Sera appeared before him. She lamented her brother’s corruption and his new intent to turn the Prana’s paradise into a dimension of darkness that would consume reality, identifying the Quantum Cube as the eighth Millennium Item. Dark Diva proceeded to banish Sera and the other Prana children before Dueling Yugi and Kaiba. They were restored after Atem returned from the afterlife to help Yugi defeat Dark Diva, however, his resurrection caused them to lose access to the Prana. After Aigami was freed from the influence of the Millennium Ring, she and Aigami parted ways with Mani, on good terms.[2]

Sera used the card "Duza the Meteor Cubic Vessel".

Her VR avatar, "Prana", has the form of an adult woman, contrasting her real-world self, who is still a child. Her avatar wears a coat, hood, mask, long gloves, boots and retains the ankh symbol of her regular clothing. In this avatar, she wields a sword-shaped Duel Disk.