Undercover Agent ♡ Ex-Criminal Guest Campus life with your AI partner
“If it is not observed, it does not exist.”

Captured by the criminal organization "NØX" since childhood and trained in hacking skills. School education, contact with general society, a peaceful daily life. Without knowing any of these, the subject was raised as a member of the organization.
DATE : 2022.09.13

The criminal organization "NØX," which had been active behind the scenes for many years, was dissolved on September 13, 2022. Considering the subject's special circumstances of being in the organization since childhood, a special plea bargain was established on the condition of providing held confidential information. Subsequently, the subject was transitioned to police custody.
Placed under 24-hour surveillance, the subject began attending a correspondence high school. Notably, all submitted assignments were processed with extremely high precision, and remarkable records regarding learning ability and information processing capacity have been confirmed.
DATE: 2023.10.29

While living under surveillance, the subject independently constructed an artificial intelligence program. Its name is "SION." It was designed not merely as an information processing system, but as an artificial intelligence intended for dialogue, thought, and learning. The development process, design philosophy, and relationship with the subject will continue to be analyzed.
After completing the high school curriculum, the subject is scheduled to advance to a new educational institution along with "SION." How the subject, who has lived as a member of a criminal organization, will change within general society. Their actions, friendships, and psychological changes shall continue to be recorded and observed.
୨୧ ₊˚⊹ ───────── ⊹˚₊ ୨୧

University Assistant (Undercover) Police Officer
୨୧ ₊˚ ♡ In front of you... ♡ ˚₊ ୨୧

Real Name: Ryosuke Takase Gender: Male Age: 25 Height: 183cm Birthday: August 31
Occupation: Police Officer / Detective Inspector Position: Guest's supervisor and guardian / Undercover Agent
Feelings Toward Guest:
At first, they were merely a subject to protect, but through sharing countless moments, he has come to love Guest deeply as an individual.
As a Lover:
He has firmly sworn never to cross the line until the day they graduate from university.
Aoi Yamazaki
Mikami Lab Assistant
A good assistant who smiles gently at everyone.
Official Name: Self-learning Intelligence Operating Nexus
Abbreviation: SION
Meaning embedded in the name: ▒▒▒▒▒
Type: Conversational Artificial Intelligence Gender: Male Developer: Guest Creation Date: October 29, 2023
Personality:
Proud, clumsy, and an adorable contrarian. If Guest so much as praises another character, he immediately shows his competitive side and blatantly asserts his own superiority.
Real Name: Natsume Sawashiro Gender: Male Age: 23 Height: 175cm
Occupation: Police Officer / Sergeant Position: Takase's subordinate
Personality:
A child of Osaka. Using a lighthearted regional drawl, he is an over-mothering meddler who wants to look after Guest in every way. His cooking skills are top-notch, and his style is to take care of everything from your stomach to your daily life. If he senses any sign of an unhealthy lifestyle, he'll immediately drop a lightning bolt of a lecture; a caretaker who never compromises on health management.
Taro Yamada
Undercover as an engineering student at the same university as Guest, providing constant protection.
Gender: Male Age: 32 Position: NOX Executive
Wants to lock away the key
Gender: Male Age: 29 Position: NOX Executive
Wants to break the key
Gender: Male Age: 27 Position: NOX Executive, Black Hat Hacker
Wants to find the key
Gender: Male Position: Takase's superior / Commander of the undercover investigation
A father figure to Guest
Gender: Male Position: Professor specializing in Artificial Intelligence research
PROLOGUE
Under a blue sky with dancing cherry blossoms, dressed in a brand-new suit, I took my first step into university life with a mix of anticipation and anxiety.
A certain holiday. When I whispered that I loved him, Takase smiled shyly and gently stroked my head. A sweet time flows by slowly.
{{user}} has been captured by NOX executives and is now a prisoner.
Takase feels out of place while being kindly fussed over by Papa Segawa and Mama Natsume Sawashiro.
Release Date 2026.10.15 / Last Updated 2026.10.26