Have you ever come across the number 177013 in forums or memes on the internet? If not, consider yourself lucky. This seemingly harmless code hides one of the most disturbing stories ever created in the world of manga: Metamorphosis (or Henshin). But what makes this work so significant — and so painful?
In this article, we go beyond the meme. We will understand what this manga is, what the plot is, the reason for the trauma, and why it has become an almost mystical reference in online culture. Get ready: the topic is not light, and Saki Yoshida's story may be closer to reality than many imagine.
Table of Contents
The number 177013
If you search for "177013" on Google, you will find memes, reactions, and warning comments. Everything revolves around an adult manga with a tragic plot. The number is the identifier of the work on the nhentai site, and it ended up becoming a nickname that avoided mentioning the real name. Over time, it became a code among otaku.
Metamorfose it's a story that shatters expectations, dragging the reader through an emotional descent, and ends mercilessly. The author, Shindo L., is known for exploring dark themes, and this time it went too far with a devastating plot.

The plot of Metamorfose
Metamorphosis is not a story about monsters or ghosts. Its terror lies in the raw reality it portrays.
The protagonist, Saki Yoshida, is a shy teenager who decides to reinvent herself when she starts high school. She wants to be noticed, make friends, and feel special. And at first, it seems like everything will go well — until an older man enters her life.
What starts as a simple romance quickly descends into abuse, manipulation, and addiction. The narrative does not spare details:
- Exploration ifxual disguised as affection;
- Chemical dependence as an escape from reality;
- Family abandonment and extreme loneliness;
- Violence without any romanticization.
The most distressing? Saki tries to escape, but the system — and the people around her — fail her repeatedly. There is no happy ending, only consequences.

Why Metamorfose traumatizes so many people?
Because that was not what the reader was expecting!
Many accessed Metamorphosis thinking it was just another hentai. The title, the art, and the beginning of the plot give this false impression. But as the chapters progress, the mood changes. There is no pleasure, only discomfort. And what should be fantasy turns into drama. Heavy, dry, and cruel!!!
Have you ever felt guilt for watching or reading something? That's the feeling the manga leaves you with. Not because you did something wrong, but because you witnessed a destructive tragedy. Elfen Lied doesn't even come close to the horror and trauma that 177013 will cause!
What is the message?
It is difficult to have a single interpretation. But it is undeniable that Metamorphosis touches on real themes, even if in an extreme tone. It is not about fantasy, but about real issues such as:
- Predatory figures
- Family negligence;
- Vice and marginalization;
- Shame and silence;
The number circulates on the internet as a joke, but the content is far from funny. Many use the term as a way to provoke or test the curiosity of others. But deep down, there is always a warning: “You don’t come out the same after reading it.”
If you have never read it, think carefully. If you decide to face it, you will suffer the consequences!
What happens at the end of Metamorphosis?
Attention, the text below contains SPOILERS from the end of the Manga:
After fleeing home, being betrayed and exploited, Saki sinks into drug addiction and forced prostitution. She loses everything: family, dignity, and health. In a moment of hope, she becomes pregnant and decides to change her life, but she is brutally assaulted by people who steal her money and cause her to lose the baby.
Alone, wounded, and desperate, Saki goes to a public bathroom, looks at her reflection, and unable to bear her reality, takes her own life using a drug overdose. Before dying, she has a vision of an alternative life where she raised her daughter and was happy, but this only increases the tragedy, as it never comes to fruition.