Sickness

Sickness

Zetsubou · 2016 · Visual Novel, Indie, Violent, Simulation, Action

PC
Very Positive92% · 84
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$1.51-75%
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Screenshots

About Sickness

Stats (September 25th 2017)
Word count: 216,000 words
Number of CGs: 85 (plus variations of several)
Number of sprites: 32 (mostly minor characters)
31 original music tracks, + 9 CCA-by tracks

Summary/Plot

Sickness is a Visual Novel following the life of Suoh, a high school student turned violent criminal.

Following the deaths of his parents, Suoh is left without a home or source of income. All he has is his twin sister, Sara, who he promises to provide for, even if doing so means throwing his life away.

Using the entirety of their savings, the two move to another city, wherein Suoh quickly finds work. Sara commutes to her old school, Suoh works long, physically-demanding hours, and the two survive off instant food, barely scraping by. It isn't a happy life, but they make it work.

Or at least they did, until a violent outburst set into motion a rapid descent.

Amid a physical altercation with his boss, Suoh blacks out, waking up to find a corpse laying at his feet. His knuckles bloody, his muscles aching, he realizes that he has just murdered his boss, the person responsible for his continued well-being. But rather than lament the loss of life, all Suoh can think of is how badly he needed the money, and what he'll do next to get it.

Drawn by the scent of blood, one of Suoh's coworkers, a young man with criminal connections, offers him a not so legal revenue stream, one encouraging violent behavior and rewarding the capable.

And from there, everything spirals out of control.

As it turns out, Suoh has a knack for crime, and the petty reservations he had about such acts don't last long. For the well-being of his sister, as well as his own self-interest, he becomes a killer for hire, taking out people anybody his new boss tells him to. He quickly adapts to life as a killer, adopting a double life his sister can never know about.

But his new life is not without trouble. Facing death on a weekly basis is only the beginning; between avoiding police detection, eyewitnesses, and even the malice of his fellow professional killers, Suoh's new life looks to be the death of him.

Will Suoh manage to survive long enough to keep his promise to his sister? Will he turn tail and escape from this life of crime, finding solace in the company of someone or something else? Or will he be hunted down and killed before he ever gets the chance?

Main Characters

Sara Tesla - Suoh's twin sister

Sara is a high school student who harbors complex feelings. To her brother, Sara is an angelic sister with a loving nature and endless affection; an image she cultivates and builds on daily. To everyone else, however, Sara is narcissistic and thoroughly two-faced.
Family aside, Sara doesn't care for other people in the slightest, and as a result of her desperately trying to hide this fact, her family mistakenly believe Sara to be bipolar.

Karasu - An up and coming crimelord

Karasu builds his wealth through a variety of "services", including, but not limited to, gambling, corporate espionage, and organ trafficking. Above all, however, Karasu is most famous for providing "waste disposal" for neighboring towns, whether they request his services or not.
His ultimate goal is to build an empire he can share with his beloved "children"; interesting individuals he has taken under his wing and granted a new lease on life.
Though many view him as a sadistic narcissist who will stop at nothing to obtain what he wants, Karasu is ultimately a simple businessman who displays affection only for a chosen few.

Sai - Karasu's right-hand man

Sai is Karasu's most trusted and capable employee, responsible for overseeing his most lucrative business ventures, despite always working in the shadows. He is also responsible for “breaking in” new recruits, and as such becomes Suoh's teacher.
Unrivaled in what he does, Sai is a ruthless killer who feels no remorse; those who get on his bad side seldom live long enough to realize it.
The only things more important to Sai than his work are his daughter's well-being and happiness.

Misa - Sai's daughter

Misa is a teenage girl who wishes for a normal life.
Being the daughter of a professional killer (and protective father), however, Misa has trained from a young age in order to protect herself from the dangers of the world, and in doing so inevitably became aware of her father's line of work.
As her father's work absorbed her life, Misa adapted her skillset to match those of a killer, using her youth and small figure to become the youngest and most discreet killer among her peers.
Outside of work, Misa is still just a young girl. She's very friendly, once she warms up to someone, and is protective of those close to her.

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Recommended Mar 29, 2026
When life spirals out of control and a disturbing sickness infests the mind, clinging to the last remnants of normalcy becomes the only escape left. But one day, that resolve will falter. There will come a moment when the spiral runs so deep that escape is no longer possible. In fact, maybe there was never any escape to begin with. Enjoy the sickness. It bears fruit.
5 found this helpful
Not recommended Feb 1, 2025
I don't know why I wasted so much time with this. I guess I was hoping the reviews were true and it would get good at some point, but I got to the ending and guess what: it does NOT get good. It is the one of the most mediocre, boring, bland Visual Novels I've ever played, and I've played hundreds. PS: Now I see that I've "only" wasted 9,8 hours with this. It honestly felt much longer because of how incredibly boring it is
4 found this helpful
Not recommended May 18, 2025
As VNs go the writing is wayy more important than the art (so I though I'd give it a go), but in this case the writing is just as bad. They keep killing characters shortly after being introduced so you don't care about any of them. It's all extremely boring, I kept waiting for it to get good but that isn't happening, I'm very surprised at the number of positive reviews. Edit: I came back and finished it because I was curious about the story, the characters stay very troupe-y and the plot gets a bit more interesting, but It's still pretty bad, but like a little bit amusingly bad
2 found this helpful
Recommended Jul 7, 2026
[i][b]Sickness[/b][/i], truly a unique VN which is certainly not made for everyone. This VN is now 11 years old (2016), and its last story update was almost 10 years ago (2017). I’m writing a review covering each part, a story explanation, explanations of all routes, and plot holes/flaws with spoilers. [b][u]Story:[/u][/b] Prologue and 16 chapters in total. There was a backstory: Suoh and Sara were very close. The Tesla twins went to school together and shared everything. Others often gossiped about them, which also concerned their parents. Their parents tried to separate them but failed. Sara always quarreled with any girl who talked to her brother. Later, they met a classmate named Cecilia. She was detached from her parents and peers. She started liking Suoh after he saved her. Then Cecilia began interfering in. One day she also told Sara that her relationship with Suoh was wrong and that siblings should not behave that way. Sara snapped and choked Cecilia, then tried to hit her with a bat. Suoh stepped in to stop the fight, but he was accidentally struck on his head by the bat instead. Sara grabbed her fallen brother, pulled him into her lap, and repeatedly cried out his name.…
1 found this helpful
Recommended Jul 26, 2025
There was a moment at the beginning when I thought the game's overall message would be "murder is le bad," but the story developed in ways that kept me interested in how things would resolve. Definitely worth your time.
1 found this helpful
Recommended Jan 8, 2026
Очень достойная новелла. За персонажами интересно наблюдать, рисовка, особенно в кат-сценах, приятная, сюжет занимательный. Отдельно отмечу, что в новелле аж 4 рута, не ожидал такого от хоррор-новеллы. Количество и качество контента абсолютно стоит потраченных денег.

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