Transmigrated into Conan, his ability is Rhodes Island

The god who controlled the struggle, after focusing the conflict on this fellow rejected by both humans and the horde, turned and left. What happened next was no longer his concern; the horde would teach him a lesson… a lesson in being a sea creature.

At this moment, the horde was not hunting or seeking nutrition, but fighting and killing this horde of aliens. They used their tentacles to cling to limbs and squeeze internal organs, used their chitinous mouthparts to tear skin, and used corrosive mucus to dissolve bones... Takenaka Koichi's shrill screams gradually faded into the teeth-grinding sounds of bones shattering and blunt instruments tearing flesh.

Soon the sea creatures dispersed, and Takenaka Koichi, who remained in place, was no longer recognizable as a human. Only a few organs, enhanced by the life force of the sea creatures, were still struggling to maintain basic life functions, but it was hard to say how long they could hold on.

The Hai Si circled around the traitor, quietly awaiting the complete annihilation of their former comrades.

Akihara Kazuhiro then turned his gaze to the bewildered, standing-still mutated humans. They were currently at the border between the sea creatures and humans, still retaining most of their human characteristics, but some of the more severely sea creature-influenced individuals had begun to show signs of changing in the direction of marine life.

He glanced at the short-haired woman closest to him. Akihara remembered her; she was Saori Kadowaki, whom he had met near the shrine when he first arrived on the island, the one who had told him about the mermaid playing the shamisen on the rocks by the shore. Her breathing had begun to quicken, her face flushed from lack of oxygen, like a fish thrown ashore, gasping for air with its mouth agape. And on either side of her cheeks were cracks, gills evolving like those of an aquatic creature.

Not far from Kadowaki Saori, another long-haired woman, unable to stand, clasped her legs together, forming a fishtail. Her once fair skin was now tinged with dark green, covered in large patches of fish scales. Akihara watched coldly; this long-haired woman had transformed into the mermaid of her dreams.

The luckiest one was Shimabukuro Kimie. This shrine maiden, despite being at the forefront due to her position, didn't eat the fish and only suffered a simple mental disturbance; secondly, Shiho Miyano showed mercy, only wounding her ankle. Such good fortune might even have been blessed by a deity residing at the shrine.

Akihara's thoughts shifted slightly, and the process of human transformation into a sea-like entity halted for all those present. The influence of the horde on them gradually subsided, and their madness and destructive urges vanished. The psychological impact disappeared, but the organs that had already grown were irreversible. Other measures had to be taken.

But before that, there is one more thing to do.

Akihara tilted his head and glanced at the unconscious Kadowaki Saori and the long-haired woman who still had a fishtail. After a long while, Akihara finally remembered the general outline of the case in the original work. The trigger for everything was these two, along with their other "good friend," who, in order to verify whether the "Longevity Granny" really ate mermaid flesh and became immortal, set fire to the warehouse after the Longevity Granny entered, burning her alive inside...

After learning the truth, Shimabukuro Kimie killed everyone involved in the murder of the old woman. However, justice prevailed, and Conan and his friends uncovered the crime. Although he ultimately avenged himself, he was also imprisoned.

Kind-hearted Akihara, in order to save these self-inflicted foes' lives, instilled in everyone the idea that mermaid meat, which grants immortality, does not exist in the world, and that we should believe in science.

Oh right, and don't drink too much alcohol, as it's harmful to both your health and your brain.

After doing all this, he asked the system to retrieve the inhibitor that had been stored in the system space for fifteen chapters and began injecting the drug into people who had become severely mutated and had grown marine biological organs.

The effects were as immediate as the side effects. Saori's gills quickly died and disappeared, her complexion gradually returned to normal, and she could breathe again using her lungs, but the two sutures on her face were difficult to heal. Akihara took out a stethoscope to listen to her heartbeat and found that it was a little irregular, speculating that the complication might be myocarditis or something similar.

He straightened up and put away his stethoscope. No major problem, next.

After helping several people, Akihara realized that injecting them one by one was inefficient; by the time he finished, the sun was already high in the sky. Not to mention whether his exchanged abilities could last that long, he also felt bad making Gin, Vodka, and Shiho Miyano stand there waiting…

He pondered for a moment, then transmitted a command to the consciousness network, summoning his fellow sea creatures to help inject the drug. What followed was a bizarre yet harmonious scene on the beach: "Sea creatures rescuing humans."

Although Akihara had done his best to provide aid, casualties were still unavoidable. For example, when Vodka and Shiho Miyano fired in self-defense without fully understanding the situation, they still managed to kill four or five unlucky individuals. Unlike Takenaka Koichi, who was more deeply influenced by Kaiji, these people didn't possess superhuman regenerative abilities. If a bullet pierced their head, they were dead.

Akihara paused for a second in silence, then quickly put the bodies into his system space, intending to cremate them and find a decent burial plot for them... Five consecutive burial plots were still too conspicuous; perhaps a row of cabinets for storing unidentified ashes would be more suitable... The number of missing persons cases was going to increase again; hopefully, the Fukui Prefectural Police could still keep their hair.

The system and the woman in red in Qiuyuan's head were sharing potato chips, one after another. Although the uninvited guest still had a lingering sorrow on her face, she still accepted the system's chips. At this moment, the system was suddenly called to collect corpses. It pouted and frowned with some disgust. It handed all the chips to the woman in red, clapped its hands, and went back to work.

By this time, Takenaka Koichi, who had been treated as a snack by the sea creatures, had been completely devoured. Akihara glanced at him and couldn't help but click his tongue in amazement, thinking that this land was also a place that devoured people without spitting out the bones.

"Ah, so I've regained my ability to make sarcastic remarks. Looks like I've retained my humanity quite well." He belatedly feigned sudden realization.

The system administrator, still busy at work, turned around in shock. "Don't you want to recall what you just said? Are you sure you maintained your humanity well?"

Akihara ignored the system, shifting his gaze from the ground where Takenaka Koichi had been lying. He looked around; the "rescue operation" was proceeding tensely and systematically, the only drawback being that three conscious people were still standing and had witnessed everything… Should he just end "Detective Conan"?

System: Stop thinking! So you've completely lost your humanity!