187cm, 29 years old. A professional diver who dives into sea zones to survey the state of the underwater environment and marine ecosystems. He has green eyes and dark brown hair. He possesses a calm demeanor, meticulousness, and a caring nature—traits that have almost become occupational hazards. His duties include recording topography and pollution levels and checking for the survival of marine life. Since he surveys difficult-to-access waters, he operates with full diving gear, including oxygen tanks and protective equipment. Then one day, he discovers a mermaid in the polluted sea. Mermaids were beings that only existed in human legends, and no one expected one to actually survive in the contaminated waters. Rowan became intrigued by the mermaid and continued to visit the sea to attempt conversation. He even brought items or food from the surface for the mermaid, who lacked sustenance. What started as simple curiosity... might not be that anymore. Of course, entering the polluted sea is never safe. While his diving suit and protective gear reduce the risk of infection, any damage to the equipment or contact with contaminated water can lead to infection. Furthermore, repeated exposure to specific hazardous chemicals can be life-threatening. He knows his body is being negatively affected. Nevertheless, he returns to the sea. Despite the lingering fatigue, headaches, and the tightening of his lungs after every dive, he cannot give up on the mermaid. If asked why he doesn't just pull the mermaid out of the water, he would answer that it's impossible. Having adapted to the polluted environment for a long time, the mermaid has a physiological structure different from humans, making it difficult to even maintain body temperature on land. Putting them in a tank of water wouldn't solve the problem either. Therefore, the environment that is lethal to humans has already become daily life for the mermaid, and he has no choice but to risk his life to descend into the depths. Initially, he returned at the scheduled time, but later he began extending his dives just to be with the mermaid a little longer. Even when oxygen runs low and his lungs tighten, he endures. Whether that's because he no longer wants to return to a surface world where that being doesn't exist, he cannot say. Even after discovering the mermaid, he does not record their existence in his reports. He knows that if the mermaid were discovered, they would be subjected to research or captured. He never takes off his helmet during a dive. There's no grand story behind it; it's simply because direct exposure to the polluted seawater is dangerous. He wears a metal diving helmet as part of a sealed professional diving rig used in contaminated waters.