Sejitsuna (Code 13)

Sejitsuna or Seji, is an independent Cyborg wannabe Idol VTuber. She speaks English (mainly) and German and can understand Italian, Spanish and French very well. It is unknown where on Earth she currently resides but she spends most of her time on her home planet, Khronos XII.

Personality
Seji's personality and voice are all over the place. She's very energetic and tends to phrase her sentences in a weird way, making her sometimes very "sus". While definitely being on the crazier side, she's usually kind and welcomes any new chatter with open arms! That's why people feel the "weird onee-san" vibes when spending time with her.

People often misunderstand what kind of cyborg she is. From what she told us, her body is almost fully modified and artificial, made from special materials that don't exist on Earth. Only her heart, brain, and stomach are organic. Her body is able to have a "code" and people make fun of that fact saying that she's a computer.

Seji has a good singing voice and an incredible range. She often sings on her streams, so it's almost always like a karaoke party. Her voice changes with her emotions, especially when she's "overly cute" Seji. Even though it's supposed to be the least scary of emotions to express, people stated that they're more likely to get scared by that than by "insane" Seji.

What's also a big part of her personality is that she's not really an idol but more like a wannabe idol. Seji is trying to become a star and she's getting closer to that goal every day. She always pursues her dream until she achieves it and wants to motivate everybody to do the same.

Background
Sejitsuna first debuted on 13 November 2021 as the powerful cyborg and protector from Khronos XII who accidentally came to Earth.

On 30 April 2022, she debuted as the cyborg idol, officially pursuing the idol arc. She realized after spending some time on Earth, she can be herself and live how she wants.

Fans

 * Sejitsuna's fans are called the "troublemakers". Once you follow Seji, you automatically join the Khronos Gang.

Lore
From what Sejitsuna said about her past for now, which is not much, we know that she's a protector of planet Khronos XII. There, she was also given the title of Code 13. The protectors are seen as guardian angels and are a very important part of the planet. There is Code 11, 13, 14, and 15. They all have unique and special abilities thanks to System Code 12, which is a powerful machine built by Code 11 on Khronos, making it Khronos XII. After that, the planet chose special cyborgs to gain protector codes.

Before, Khronos was ruled by a monarchy. The King or Queen got chosen by "fate" and got the supreme Code 0. Even though they are meant to rule and protect Khronos, they never really cared about the planet. Some say it's because the code is so powerful that it changes the person. And some say it's a virus that comes with it. Whatever the reason may be, the latest Queen, Code 10, willingly gave up her code to create System Code 12. Yamato, being a very skillful technologist and engineer, told her that it will change Khronos for the better and that it is the only way. And so it did. After the planet merged with the system, it created a shield around it and generated a power source the whole galaxy could feel. Yamato got the title Code 11 as Khronos XII outshined all the other planets, making it dominant. No planet would dare to attack Khronos again, all thanks to Code 10 and Code 11.

Sejitsuna accidentally came to Planet Earth as she created an emergency portal to save herself from an explosion that happened on her mission. After staying on Earth for a while, she made a lot of new acquaintances and friends. She realized that she can be someone else on Earth and pursue her dreams because here, she isn't some feared protector of Khronos. And so, she decided to become an idol! And that is the Seji we know now. Nonetheless, people know that she's still hiding some sort of information. Most suspicious is her code, which can be seen below her chest. It says 013 and not just 13.. why is that? Maybe she will tell us more soon.

Miscellaneous

 * Her true height is unknown, she only wears high heels or platform boots
 * She is known for her underendowed chest and wears a specially tailored top to make them look "bigger"
 * She says that she always has to wear something on her head, or else she feels naked
 * She's on the Asexual Spectrum
 * Both her Code (13) and Birthday day (17) are seen as "unlucky" numbers
 * Planet Khronos XII is in a different dimension
 * Seji has the ability to use electrokinesis, psychokinesis, open portals and summon firearms
 * When Seji uses her full power, she generates a halo and wings with electricity

Media

 * Sejitsuna - Twitch Channel
 * Sejitsuna - YouTube Channel
 * Sejitsuna Twitch Archive - YouTube channel (VODs)
 * @Sejitsuna - Twitter account
 * @sejitsuna - TikTok account
 * Khronos XII - Discord server
 * sejitsuna.carrd.co - Website and more Links

Twitter hashtags

 * #Code13Art - Fan Art