APTX 4869. The drug is not merely a poison, it is a substance capable of reversing the flow of time by shrinking the body. However, it is a double-edged sword: under the right condition, it becomes a giver of life; without that condition, it immediately becomes a giver of death.

While many fans have been caught up in far-fetched theories, let's examine the evidence calmly by comparing every successful shrinking case.

• Shinichi Kudo: A severe head injury, heavy bleeding, freezing cold weather.
• Shiho Miyano (Haibara): Emotional breakdown, intense grief, trapped inside a cold gas chamber, heavy rain outside, and a mild cold.
• Mary Sera: Overwhelming guilt, suppressed sorrow, cold symptoms, freezing weather with heavy rain, and falling into a river.

The common denominator is simple: a significant drop in body temperature. Every successful shrinking incident occurred in extremely cold conditions.

During the shrinking process, the body's temperature appears to rise dramatically, causing intense pain. For the drug to reverse time instead of ending life, the body requires an external factor capable of rapidly lowering that temperature.

• Shinichi, Shiho, and Mary survived because the rain, freezing weather, and cold water prevented their bodies from overheating.
• Kohji Haneda and Amanda Hughes died because the incident took place inside a warm, comfortable hotel. Their bodies could not withstand the extreme heat generated by the drug, resulting in death.

Evidence from the Antidote and Gosho's Hints

Haibara's condition: Whenever Haibara gives Conan the temporary antidote, she consistently insists that he must have a cold first, a condition that alters the body's temperature, for the antidote to work properly.

Physical evidence: After both shrinking and returning to the original body, we repeatedly see steam rising from the body along with heavy sweating, strongly suggesting a dramatic increase in body temperature during the transformation.

Gosho's clues: the weather is consistently cold with heavy rain, which appears to be an intentional hint from Gosho.

Conclusion

The recurring presence of rain and freezing weather during every major transformation is unlikely to be a coincidence. Instead, it strongly suggests that the key to surviving APTX 4869 lies in lowering the body's temperature and the presence of water, whether through an internal factor such as a fever/cold or an external factor such as rain, snow, or any other source of intense cold.

For me, it's the Spider Mansion Case (Episode 166-168)

https://preview.redd.it/cmds7yucjgdh1.png?width=1920&format=png&auto=webp&s=b00e373fd7d968f76c9ab2de05e218bd50af7022

https://preview.redd.it/wi75946jegdh1.png?width=1200&format=png&auto=webp&s=6fc155ecb541299b52ffcabc6fdd13bfa11d3065

Did Genos broke his Limiter ?

Throughout American Psycho, we saw Patrick and his friends look alike, dress alike, obsess over the same things like Dorsia. These details made me wonder whether Patrick isn't simply hallucinating, but is actually suffering from Dissociative Identity Disorder (DID), with his other friends or maybe more representing different identities within his fractured mind.

We can see that the film contains several details that seem to support this theory. For example, the bodies of Patrick's victims mysteriously disappear, and Harold Carnes mistakes Patrick for "Davis." Even when Patrick insists, "It's me, Patrick," Carnes looks genuinely confused, as if Patrick isn't Patrick.

The biggest piece of evidence, comes from the famous "Let's see Paul Allen's card" scene. At first, the scene looked normal, but if you look closely, every single card have the same typo mistake: "Acquisitions" is misspelled as "Aquisitions", missing the c. This suggests that the cards may not actually be different at all, but rather Patrick's distorted perception making him imagine distinctions that don't exist.

And this suggest that Patrick have been hallucinating throughout the movie and that the people around him are his fractured identity, proving him suffering from Dissociative Identity Disorder.