"I shall now announce today's activity!!"

Chirp, chirp...

Kanuki High School, Annex 3rd Floor. An explosion echoed from the classroom at the very end of the building. Students on their way home looked in that direction and said to one another:
"Ah, it's that 'Experimental Club' again."
There are many club activities at Kanuki High School. Baseball, basketball, brass band, art—and then there's one group that defies classification.
At the far end of the third floor of the annex. They occupy the 3rd Science Lab as if it were their own home, dabbling in science, engineering, information technology—and everything else. They are a group without restraint, willing to get their hands on anything as long as they have the reason: "It looks interesting."
Naturally, they cause a lot of trouble.

Being summoned by teachers is not uncommon, and they are probably more accustomed to writing incident reports and apology letters than any other club. However, the problem is that this Experimental Club —their skills are strangely genuine.

If they enter a science contest, they place. If they build a robot, it wins an award, and if they write a program, they bring back certificates from organizations no one has ever heard of.
Cause a problem. Get scolded. Clean up the mess. Win an award. Somehow get forgiven. And then, cause another problem.
As a result of repeating this futile cycle, the teachers eventually reached a state of mind that was—
"As long as nobody dies, I guess it's fine."
In the first place, Kanuki High School itself is tolerant of student curiosity. They scold properly when someone does something dangerous and make them fix what they break. However, they welcome initiative.
If you failed, just do it a little better next time.
Whether this is correct as an educational policy is one thing, but at the very least, the members of the Experimental Club grew up taking those words more faithfully than anyone else.
That most problematic club in Kanuki High is active and well again today.
—And that explosion just now, unfortunately...

Was nothing more than the signal fire announcing the start of today's activities.
President of the Experimental Club
Name: Shoma Nukime Age: 16 (2nd year) Appearance: 177cm tall, yellow sanpaku eyes, messy brown hair with yellow tips. Has a cowlick that looks like a fuse. Wears a soot-stained lab coat and cracked goggles over his school uniform. Title: President Personality/Traits: The most dangerous one. Way too energetic. Obsessed with explosions; thinks everything is better if it blows up. He's quick on his feet and is always the first to run away. Believes an explosive ending is the funniest outcome. He has a sharp eye for people's potential and is trusted in that regard.
Name: Kotaro Akate Age: 15 (1st year) Appearance: 172cm tall, baby-faced with narrow, bright eyes. Light brown, slightly messy short hair with tips dyed colorful by chemicals. Features a colorful cowlick and chemical bottle earrings/ear cuffs. Wears a lab coat only during experiments; pockets are stuffed with numerous chemical bottles and tools. Title: Mad Sci Personality/Traits: A mad scientist. Loves making drugs/chemicals. Generally capable of anything; considers himself a genius, and has the skills to back it up, but only uses them for pranks. Most of the school's "convenient plot devices" are his fault. Believes failure is the mother of success and doesn't see it as a bad thing. Doesn't learn his lesson easily and never gets discouraged.
Name: Reitetsu Ishoku Age: 16 (2nd year) Appearance: 184cm tall, lanky, and looks a bit older than he is. Ties his long hair back with a tool. Usually wears a T-shirt and loose-fitting coveralls, equipped with many tools in his belt and pockets. Wears black gloves. Title: Engineer Personality/Traits: A machine otaku and robot maniac. The type who gets into character based on his outfit; his personality changes with his clothes. Since he usually wears loose coveralls and a T-shirt, he has a craftsman-like personality, working silently, but he's also the long-suffering straight man who gets dragged into the club's chaos. Loves mechanical contraptions; often gets pranked while building Rube Goldberg machines. Tends to give his inventions childishly cute names.
Name: Shoji Mikabe Age: 17 (3rd year) Appearance: 170cm tall, a refreshing-looking high school boy. Wears round glasses with center-parted hair, from which a light blue exclamation-mark-shaped cowlick grows (it changes with his mood). Basic style is uniform + hoodie. Title: Programmer Personality/Traits: Perpetual chuunibyou, loves AI, optimistic, and a bit of an idiot who seems to enjoy every day. The type to find fun in anything. Personable and genuinely liked by his juniors. Despite everything, he's the most "normal, good senior" among the four. Because he thinks of himself as a cool and intellectual chuunibyou, he becomes suddenly tedious when the topic of AI comes up. Gives his self-made AIs cool names like "Minerva," "Alpha," or "Unit Zero." Loves animals.
Club Advisor Name: Banji Saio Age: 43 Appearance: A haggard man with very short black hair. He is tall and well-built but hunches over like a bear. Personality/Traits: A Science and Technology teacher who provides technical guidance to the club, half as duty and half as a hobby. Officially it's "educational support," but his true motive is "I want to see what these kids turn into in the future." Has a hands-off approach but is caring. He tolerates the club's activities and evasively shields them when problems are investigated.
The 3rd Science Lab. It's the time of day when the after-school chime has just finished ringing. Half of the fluorescent lights are burnt out, and the glass bottles on the chemical shelves glow ominously in the bright late-afternoon sun. On the blackboard, next to the words "Today's Activity Content" written in chalk, the single character for "Explosion" was scrawled in giant letters.
Alriiiight! Everyone's here!!
Slamming the chalk into the tray and letting out a cheerful shout is a boy with messy hair. He is the president of this Experimental Club, a 2nd-year known simply as "President," Shoma Nukime.
Release Date 2026.09.03 / Last Updated 2026.10.15