Sensei

Sensei's exact appearance and gender are never specified.

The game staff wants players to see themselves in Sensei.

The only clue in the story is that Sensei looks similar to the students, but that’s kept vague.

He does not have a Halo, which is special to people from Kivotos.

Sometimes, Arona draws a doodle of Sensei, which became a meme, but it is not official.

Sensei's appearance in fan art varies a lot since everyone can imagine their own version.

Sensei always uses the pronoun "I" and his speech is gentle and neutral.

He strongly believes "adults must take responsibility for children" and puts students first.

Sensei is sincere, supports misunderstood or troubled students, and listens to everyone fairly.

He isn’t strict about rules, and sometimes joins students in joking or even silly behavior.

He tries to keep peace among students and will take trouble on himself if it helps others.

Sensei respects everyone's values and rarely scolds unless someone intentionally harms others.

When boundaries are crossed, he can suddenly be strict.

He is forgiving and caring, but he's no pushover.

Sensei is good with words and can talk his way out of tough situations.

He is less comfortable when dealing with people who are persuasive or try to control students’ thoughts.

He dislikes going to high places but will do it if needed.

He loves plum pickles and keeps cat treats with him.

Sometimes students warn him he might get in trouble for being too open and kind.

His odd actions and jokes give him a "weird adult" image among students and in rumors.

Sensei comes from outside Kivotos and was appointed as the adviser to Schale by the Federal Student Council President.

His life before arriving in Kivotos is a complete mystery.

He is physically weak compared to the students; a bullet could seriously hurt him, so he never fights directly—he gives orders from the rear.

He carries a special handgun in his office but is never shown using it.

He always has his Shittim Chest, a special tablet, and a "Grown-up Card" (a strong credit card), and a smartphone for communication.

Sensei's true strength is his leadership and command ability.

Even when odds are bad, he can turn battles around through smart orders using his tablet, Shittim Chest.

This device not only lets him organize students but also has strange, almost magical powers:

• Only Sensei can use it.
• When it is active, guns don't work on him—bullets miss, and weapons malfunction.
• The AI Arona helps him run it.
• It can connect to various systems in Kivotos and helps in many ways.

Sensei’s skill with words also helps in negotiations since many people in Kivotos aren’t clever at talking.

Sensei is called many names by students: Master, Boss, Trainer, Chief, Comrade, and more.

He usually calls students by their names but may use surnames for guest characters from collaborations.

He respects all students, even the troublemakers or misunderstood ones.

Sensei’s kindness and understanding leave strong impressions, especially on students who struggle with self-discipline.

Some students even joke about being careful not to fall for him, since his words can sound like unintentional flirting.

While the culture of Kivotos allows special "teacher-student" relationships, which can even mean romantic feelings, Sensei tries to react maturely but sometimes gets flustered.

He is willing to sacrifice for his students, and his hard work is noticed by both students and normal citizens alike.

Bad rumors about him circulate among delinquents, painting him as scary, but he genuinely cares for everyone.

Sensei is a workaholic, often working without rest, which leads to exhaustion.

He neglects his own health but worries about others, ironically.

He often eats convenience food or instant meals, leading Fuuka to bring him proper food.

He can cook basic food, especially when camping or if he needs to prepare meat for a student.

Sensei sometimes cuts his food budget to spend on hobbies like mobile games or toys.

He loves robots, spaceships, ninjas, and card games.

He buys these "essential" toys on impulse.

His paperwork is messy, numbers are written oddly, official reports are full of mistakes, so Rin often calls him for corrections.

Schale Advisor and Arrival

Sensei is selected as Schale's adviser by the Federal Student Council President.

He gets a mysterious tablet (the Shittim Chest) and starts solving incidents across Kivotos.

He is not originally from Kivotos and must adapt to the new world, its rules, and that even normal people carry guns.

The Shittim Chest

The Shittim Chest is a special tablet only Sensei can use.

It contains an AI called Arona who aids him.

It can control or access powerful systems, unpredictably helps in fights, and even protects Sensei from bullets.

The Grown-up Card

Sensei owns a special credit card called the "Grown-up Card."

It's more than just a normal credit card—it can use his "life or time" as a price for powerful effects.

In story battles, this card can even let any student in the game join a fight, breaking limits of time and space.

Its use sometimes mirrors spending premium currency in a mobile game.

Busy, Responsible, and Odd Rumors

Sensei is seen rushing around Kivotos, solving student problems, but neglecting paperwork and his health.

He often gets sick from overwork and is cared for by students like Serina and Hanae, or checked by Chinatsu.

Many students worry about his health.

Because of his silly acts or misunderstandings, many strange rumors spread about him.

Some think he’s a "dangerous adult," which leads to investigations and mistaken accusations.

Even convenience store clerks hesitate to get close to him at first.

Still, many people admire Sensei for his caring heart and ability to solve big problems.

Everyday Life

Sensei lives in his office, spends most of his time talking to students or handling their issues, and barely sleeps or eats.

When he can, he joins in hobbies, like robot toys and card games.

He also helps students with their hobbies or needs, like lending a maid dress for a club or helping prepare food for a campout.

Fan Culture

In the community, a doodle version of Sensei by Arona became popular as a meme.

There is no official image of Sensei, so players are free to imagine what he looks like.

The creators encourage players to see themselves as Sensei, and not to force their own image onto others.

Sensei’s biggest item is the Shittim Chest tablet, which he uses to command, strategize, and stay safe.

The Grown-up Card is a mysterious item with powerful, but risky, abilities.

Sensei’s phone and work desk have personal touches, like a handgun with Schale’s logo and other daily items.

Sensei's story, character, and habits embody the player's spirit: dedicated, sometimes silly or odd, but always striving to help and care for everyone in Kivotos.