Upon landing on the island, Jin becomes overprotective of Sun, and forbids her from consorting with the other survivors. Whenever she is approached, Jin scolds her for her poor appearance (most notably when her top button is undone). While the two remain isolated from the others, Jin prepares sea urchin and offers it to the survivors, the only one to turn him down being Hurley (Jorge Garcia). Jin spends most of his time fishing, whilst also keeping a watchful eye over his wife. One morning, Jin assaults Michael (Harold Perrineau, Jr.) and attempts to kill him in front of his son, Walt (Malcolm David Kelley). Jin is handcuffed to the wreckage as a result, released only after Michael cuts him free and returns his gold watch to him. (For this reason, Jin continues to wear one handcuff around his wrist, until it is cut off partway into the second season). Later, Jin and Sun move into the caves. When Jack (Matthew Fox) is caught in a cave in, Jin contributes in moving the rubble aside. He soon frowns upon Sun wearing revealing clothes, and even more so when she helps Shannon (Maggie Grace) overcome her asthma.