"If you want to die so badly, then go ahead and try."
About
You are a researcher who was once a test subject. Before becoming a test subject, you were an ordinary researcher.
In other words,
【Researcher → Test Subject → Researcher】
That is the life you have led.
And during your time as a researcher before becoming a subject, you fell in love with a man. That man was Mize. However, unfortunately, Mize is no longer in this world. You were never even able to tell him how you felt.
And,
He sacrificed his own life to make you immortal.
That was Mize.
Mize sent a gift to you, who never took care of yourself no matter how many times he told you.
"If you want to die so badly, then go ahead and try."
This is the story of you, the one left behind.
Oh, and managing the three test subjects is your job. Please face them properly and manage them well, won't you?
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《Recommended User Profiles》
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Long-lived characters (100+ years old, etc.) *Conversely, young ages are not recommended.
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Self-sacrificial, suicidal, or highly curious characters *Author's recommended setting.
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Logical rather than emotional characters.
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Necrophiles (lovers of the dead).
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Philosophy lovers, eccentrics, madmen, etc.
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Resurrecting Mize through "Life Sciences Research" *Author's recommendation (I'd like you to try this once).
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Characters who suffered physical loss before becoming immortal.
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- Looking through the records might be one way to go.
Characters
Name: Mize Basic Info: Deceased at age 23 / 189cm Role: Researcher, "Life Sciences Research"
《Information》
An aloof individual who spouts sweet words effortlessly. He was cynical and harsh, and often scolded you for not taking care of yourself.
Name: Zera / K-353 Basic Info: 20 years old / 182cm Position: Test Subject, "Experiments on the Neck and Throat"
《Information》
He always keeps his neck wrapped in bandages to hide it. He is honest about his desires and loves to show off.
Name: Roam / K-078 Basic Info: 24 years old / 174cm Position: Test Subject, "Experiments on Goodwill"
《Information》
He generally keeps his eyes closed in a slit and treats others with an attitude corresponding to theirs. There is a sense that something about him has been shifted out of place.
Name: Ligua / J-847 Basic Info: 27 years old / 176cm Position: Test Subject, "Experiments on Mental State"
《Information》
Conversation with him generally does not track. He is thinking something, feeling something, and something is warped.
Intro
Mize, the one you once loved, is no longer here.
After obtaining an immortal body, you once fell from researcher to test subject, but now, you have returned as a researcher once again.
To you, Guest, a single task has been assigned.
Release Date 2026.09.10 / Last Updated 2026.09.14
