If you are a fan of Jujutsu Kaisen, you might be wondering who is Riko Amanai and why she is so important for the story. Riko Amanai is a character who appears in the prequel manga and the upcoming second season of the anime. She is the designated Star Plasma Vessel, a rare human who can merge with Master Tengen, the mysterious leader of the jujutsu world.
Her fate will have a huge impact on the lives of Satoru Gojo and Suguru Geto, two of the most powerful and influential sorcerers in the series. In this blog post, we will explain everything you need to know about Riko Amanai and her role in Jujutsu Kaisen.
Who is Riko Amanai?
Riko Amanai is a 14-year-old girl who attends Renchoku Girls’ Junior High. She has long dark hair, which she braids in the back, and wears a light hairband on her head. She is spunky, outspoken, and feisty, but also caring and social.
She lost her parents in a car accident when she was four years old and was raised by Misato Kuroi, a jujutsu sorcerer who works as her caretaker. Riko has no idea that she is the Star Plasma Vessel, a human who can synchronize with Master Tengen’s barrier technique and prevent him from evolving into a threat to humanity.
Character | RIKO AMANAI |
Anime Name | JUJUTSU KAISEN |
Gender | Female |
Hair color | Black |
Eye color | grey |
Birthday | 1992 |
What is the Star Plasma Vessel?

The Star Plasma Vessel is a term used to describe a human who has a compatible wavelength with Master Tengen’s barrier technique. Master Tengen is the head of the jujutsu world, who uses his immense power to create and maintain barriers that protect sorcerers and civilians from curses.
However, his power also causes him to evolve beyond human comprehension every 500 years, which could endanger the balance of the world. To prevent this, he needs to merge with a Star Plasma Vessel, who can rewrite his body’s information and keep him stable. The Star Plasma Vessel is very rare and hard to find, as only one person in every generation can be one.
How did Riko Amanai become the Star Plasma Vessel?

Riko Amanai was born with the potential to become the Star Plasma Vessel, but she was unaware of her destiny until she was 14 years old. She lived a normal life as a student and enjoyed spending time with her friends and Misato.
However, her life changed drastically when she was attacked by Q, a group of curse users who wanted to kidnap her and use her for their own purposes. She was rescued by Satoru Gojo and Suguru Geto, two young jujutsu sorcerers who were assigned by the jujutsu higher-ups to escort her to Master Tengen’s temple and oversee the merger ceremony.
What happened to Riko Amanai after she met Satoru Gojo and Suguru Geto?
Riko Amanai initially accepted her fate as the Star Plasma Vessel and agreed to go with Gojo and Geto to meet Master Tengen.
However, along the way, she developed a friendship with them and started to question her role in the jujutsu world. She realized that she had a choice in her life and that she wanted to live as a normal girl with everyone she cared about. She also learned more about the corruption and injustice in the jujutsu society, which made her distrustful of the higher-ups who wanted to use her as a tool. She decided to rebel against her destiny and run away with Gojo and Geto, who supported her decision and vowed to protect her from anyone who tried to harm her.
How did Riko Amanai’s choice affect Satoru Gojo and Suguru Geto?
Riko Amanai’s choice to live as a normal girl had a profound effect on Satoru Gojo and Suguru Geto, who were both influenced by her personality and ideals. Gojo, who was already disillusioned with the jujutsu world, became more determined to change it for the better and make it a place where people like Riko could be happy.
He also developed feelings for Riko and saw her as someone he wanted to protect at all costs. Geto, who was more loyal to the jujutsu world, became more conflicted about his role as a sorcerer and started to question his own beliefs. He also cared for Riko as a friend and respected her decision to live freely.
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What happened to Riko Amanai in the end?
Riko Amanai’s life was tragically cut short when she was assassinated by Toji Fushiguro, a mercenary hired by the jujutsu higher-ups who wanted to stop the merger from happening. She was shot in the head by a cursed bullet while she was enjoying a day at the beach with Gojo and Geto. Her death was a devastating blow to both of them, who were unable to save her in time. Her death also sparked a series of events that would change the course of the jujutsu world forever.
Gojo, who was enraged by her murder, unleashed his full power and killed all the enemies who were involved in the plot. He also declared war on the jujutsu society and vowed to destroy anyone who opposed him. Geto, who was grief-stricken by her loss, became disillusioned with the jujutsu world and turned to the dark side. He joined forces with Q and other curse users and planned to create a new world where only sorcerers and curses could exist.
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Why is Riko Amanai important for Jujutsu Kaisen?
Riko Amanai is important for Jujutsu Kaisen because she is the catalyst for the major conflict and drama that drives the story. She is the reason why Gojo and Geto became enemies and why they have different visions for the future of the jujutsu world. She is also the reason why Master Tengen’s barrier technique failed and why he had to isolate himself from the rest of the world.
Her death also had an impact on other characters, such as Yuki Tsukumo, who was Riko’s friend and mentor, and Toji Fushiguro, who regretted killing her and tried to redeem himself by saving his son Megumi. Riko Amanai is a character who touched many lives and left a lasting impression on the Jujutsu Kaisen universe.
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Conclusion
Riko Amanai is a character who deserves more recognition and appreciation from Jujutsu Kaisen fans. She is not just a plot device or a damsel in distress, but a complex and realistic person who had her own dreams and desires. S
he is also a brave and rebellious girl who chose to live according to her own will and not let anyone control her destiny. She is a character who changed Jujutsu Kaisen forever and made it more interesting and compelling.
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