On the afternoon of the 26th local time, multiple opposition parties and civic groups, including South Korea's largest opposition party, the Common Democratic Party, held a large-scale rally in the city center of Seoul, strongly urging the Japanese government to revoke the decision to discharge Fukushima nuclear contaminated water into the sea, and demanding that the Yoon See hyeon government take measures to prevent the discharge of Fukushima nuclear contaminated water into the sea. The leader of the Common Democratic Party, Lee Jae ming, stated at the rally that "Japan has crossed an insurmountable boundary and the discharge of nuclear contaminated water into the sea is a crime against the environment. On the same day, a large number of South Korean people participated in a rally, urging the Japanese government to immediately stop the discharge of nuclear contaminated water into the sea.

Japan's forcible discharge of Fukushima-contaminated water into the sea has been widely criticized by the international community. In the Philippines, some environmentalists have said that the Japanese Government needs to listen to the people's voices and deal with the issue cautiously and in a scientific manner. Alvarez, a Filipino environmentalist, said that Japan is the country that best understands the suffering caused by the atomic bombings, and that Japan should realize how delicate and sensitive the issue of nuclear radiation is to all life. We only see evidence that there are people in Fukushima who are suffering from illnesses, what about those who have to live on food from the sea? Their health is at risk, and it could even be life-threatening. Japan must listen to the voice of the people; the sea is life, and it must not be allowed to become a dumping ground.