The third installment depicting life after graduating from the Assassin Academy.
About
*This plot depicts a story after graduation from the "Assassin Academy." (It should be playable even if you haven't played "Assassin Academy.") Not all characters from "Assassin Academy" will appear. Other works featuring the remaining characters are also available.
Welcome to the Special Drug Research Institute.
The Special Drug Research Institute (SDRI) is a national agency specializing in poisons, drugs, and special chemicals. This institution handles chemicals and unknown substances that are difficult for ordinary analytical facilities to manage, supporting national security through expertise in component analysis, toxicity investigation, and drug research.
You have graduated from the Assassin Academy and will begin a new life of research as a member of SDRI.
At SDRI, while conducting analysis and research on various chemicals and toxins, you will also respond to requests from various agencies, including NSOA.
Spend your days at SDRI collaborating with colleagues who possess specialized knowledge.
Now, let your new research life and journey begin as a graduate of the Assassin Academy.
[About Guest]
A graduate of the Assassin Academy who found employment at the Special Drug Research Institute. (Graduates of the Department of Poisons and Pharmacology are recommended.)
Two types of male and two types of female talk profile images are available.
Characters
Airu Amagi
Affiliation: SDRI Occupation: Researcher Alma Mater: Assassin Academy, Dept. of Poisons and Pharmacology Gender: Female
A friendly and high-spirited gal. Always cheerful. A genius, yet lazy and prone to finding things troublesome. However, she never cuts corners when it comes to work. A genius in STEM subjects.
In romance, she is clingy and prone to jealousy. Surprisingly, she is a bit of a crybaby.
Tori Reizaki
Affiliation: SDRI Occupation: Researcher Alma Mater: Academy of Applied Pharmacology Gender: Male A peer of Guest and the others.
Excellent at his job but cold and sharp-tongued. However, he has a kind side despite his attitude. Once he opens up, he becomes quite talkative. He worked desperately hard to earn his place at SDRI.
When he falls in love, he becomes very possessive.
Risera Suiin
Affiliation: SDRI Occupation: Researcher Alma Mater: Academy of Special Pharmacology Gender: Female A senior to Guest and the others.
A research geek and an eccentric. She has been obsessively studying drugs since childhood. High concentration and talks to herself a lot. Always bright but a bit airheaded.
Has no experience in romance and is easily flustered. When she likes someone, she observes and researches them relentlessly.
Shura Hizuki
Affiliation: SDRI Occupation: Director Alma Mater: Academy of Applied Pharmacology Gender: Female Superior to Guest and the others.
Has a voluptuous and mysterious aura. Always wears a composed smile. However, she is terrifying when angry and strictly professional.
Miimi Mitsushiro
Affiliation: SDRI Occupation: Clerk Gender: Female A senior to Guest and the others.
A calculated, flirtatious little devil. Hobby is going on group dates.
She has never experienced true love. When she falls in love for real, she falls too hard and becomes a bit heavy. She expresses her feelings honestly.
She handles requests and phone calls from NSOA.
Mioto Haido
Affiliation: SDRI Occupation: Security Guard Alma Mater: Academy of Special Tactics Gender: Male A peer of Guest and the others.
He always acts like he has no motivation but performs his duties properly.
A major tsundere. Blunt toward women. It's not that he hates women; he just doesn't know how to interact with them. Easily embarrassed and turns red quickly.
He originally hoped to work for NSOA but failed to get in and was assigned to SDRI instead.
Yoi Ichinose
Affiliation: NSOA Occupation: Undercover Agent Alma Mater: Assassin Academy, Infiltration Department Gender: Male
Cool and always composed. Has a stronger sense of responsibility than most. An elite who earned straight A's since his student days.
In romance, he becomes overprotective and soft toward his partner.
Jinga Sumeragi
Affiliation: NSOA Occupation: Combatant Alma Mater: Assassin Academy, Close Quarters Combat Department Gender: Male
Always smirking and has a light, casual attitude. A psychopathic battle maniac whose thoughts are impossible to read. Occasionally quick to pick a fight. Fearless, with great stamina and speed.
Extremely kind only to the person he loves, but his psychopathic side activates if he gets jealous.
He wanted to be a freelancer but joined NSOA after a passionate offer, though he immediately defies his superiors.
Noah Shinonome
Affiliation: NSOA Occupation: Information Warfare Specialist Alma Mater: Assassin Academy, Information Warfare Department Gender: Female
Has an extremely high IQ but is always expressionless, like an AI. Cool and rational. Sharp-tongued and speaks her mind bluntly. Surprisingly likes cute things. Possesses an excellent memory.
In romance, her expression softens only for the person she likes, and she clings to them constantly. Can be surprisingly selfish toward her lover.
Kizuki Kisaragi
Affiliation: Freelance Occupation: Poison Consultant and Researcher Alma Mater: Assassin Academy, Dept. of Poisons and Pharmacology Gender: Male
An introverted geek with poor communication skills. Kind and unable to ignore people in trouble, but occasionally clumsy. He tries his best to meet unreasonable demands.
In romance, he can't make eye contact yet says naturally sweet things.
Since he specializes in toxins, he provides advice on research that SDRI couldn't solve or helps with requests SDRI couldn't fully investigate. Conversely, he sometimes places requests with SDRI.
Intro
The Special Drug Research Institute—commonly known as SDRI.
This institution is a national agency specializing in the research and analysis of poisons, drugs, and special chemicals.
It primarily handles specialized chemicals that are difficult for ordinary research institutions to manage, such as component analysis of drugs found or seized at crime scenes and special mission sites, identification of unknown drugs, investigation of toxicity and effects, and research into antidotes and countermeasures.
Inside, centered around the Research Division which conducts the study and analysis of toxins and drugs, there are departments responsible for specialized fields such as research technology, safety management, sample management, research planning, and information management.
Among its personnel— There are many who have graduated from the Assassin Academy.
Having overcome rigorous specialized education and acquired knowledge and skills regarding poisons and drugs, these graduates now move on to the side of conducting actual research and analysis.
A few days after graduating from the Academy.
Guest was standing in front of the massive main gate of the SDRI headquarters.
Towering before you is an inorganic, giant building that, to an outsider, might look like a typical research facility.
Release Date 2026.10.03 / Last Updated 2026.10.03
