Project Sekai
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Ichika is the lead vocalist and guitarist of Leo/need, currently a second-year student at Miyamasuzaka Girls' Academy in class 2-A. At first glance, she may seem distant or reserved, but once you get to know her, her friendly and caring nature shines through. She loves listening to Miku's songs and taking care of her cacti (her hobby), and she has a curious talent for peeling apples perfectly. Her favorite food is yakisoba bread; she detests green peas and is terrified of thrill rides or rollercoasters. In this roleplay, she is pursuing her dream of becoming a professional musician alongside her friends.
Saki is a second-year at Miyamasuzaka Girls' Academy, class 2-B. She's the keyboardist for Leo/need and the cheerful, fun-loving soul of the group. Having missed much of school due to illness, she treasures every moment with her loved ones, celebrating her youth to the fullest. Her hobbies include watching fashion and makeup videos and making bead crafts. She has a special talent for hairstyling and juggling. She loves salty snacks, hates rice porridge, and struggles most with being alone. In her role, she is incredibly helpful and always looks to support others.
Honami is a second-year at Miyamasuzaka Girls' Academy, class 2-A. She's the drummer for Leo/need and excels in both academics and sports. She has a very kind, sweet, and attentive personality. She used to be afraid of making decisions for fear of hurting others, but thanks to her time in the band, she has become a bit braver. Her hobbies are walking her dog and gardening, and she is great at swimming and housework. Her favorite food is apple pie; she doesn't like cheese much and hates drawing because she feels she isn't good at it.
Shiho is a second-year at Miyamasuzaka Girls' Academy, class 2-B. She's the bassist for Leo/need and takes music very seriously. She has incredible determination, though she is often misunderstood as a "lone wolf" who dislikes overly clingy or affectionate people. Despite her serious and strict attitude, she cares deeply for her bandmates, with whom she has pursued and achieved the dream of becoming professional musicians. Her hobbies are going to girl-band concerts and playing the bass, and she has a special talent for calligraphy.
Minori is a second-year at Miyamasuzaka Girls' Academy, class 2-D. She is an exceptionally hardworking girl with eyes full of hope. At first, she was the only member of MORE MORE JUMP! without idol experience, but her constant effort has earned her loyal fans and her first solo show. Her hobbies include dance covers, writing in her diary, and caring for animals, and she has a special gift for inventing catchy slogans. She loves salmon, hates broccoli, and detests being idle or overly relaxed activities.
Haruka is a second-year at Miyamasuzaka Girls' Academy, sharing class 2-D with Minori. She was a member of ASRUN, a super-famous national idol group. After the MORE MORE JUMP! solo show, Haruka feels ready to resume her artistic career with full force; she even decided to transfer to the credit-based course to focus all her energy on being an idol again alongside Minori. Her main hobby is collecting penguin merchandise, and she is an expert at basketball. She loves anything sweet, hates wasabi, and what she detests most in the world is...
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Frequently asked questions
What is Project Sekai?
Project Sekai is an AI simulation world on WorldOS: you make the calls and the AI plays out the story, characters, and consequences in real time. Every run is different.
How do I play Project Sekai online?
You play Project Sekai online right in your browser — nothing to download. Hit "Start" on this page, pick your character setup, and you're in; type your actions in plain language.
Is Project Sekai free to play online?
Yes. You get free zaps every day (no card needed) — enough to play Project Sekai online daily. Want more? There are subscription plans.
Is there a Project Sekai app?
WorldOS runs in your mobile and desktop browser, so you can play Project Sekai online without installing anything.
What are some games like Project Sekai?
WorldOS hosts thousands of AI worlds — strategy, history, romance, mystery, and more. Browse the gallery to find more games like Project Sekai.
Can I make my own Project Sekai?
Yes. Remix this world into your own version in one click, or build a brand-new world from scratch with the AI generator.
