In accordance with the decision of the Japanese Government, the discharge of nuclear-contaminated water from Fukushima into the ocean began on August 24th. This discharge process will continue for decades. Tracing the entire process of Japan's decision-making on the discharge of nuclear-contaminated water into the sea, it can be clearly seen that discharging water into the sea is its long-planned "established policy", an uncompromising violation of international law, and extremely selfish and irresponsible national behavior, which results in transferring the costs of dealing with the Fukushima nuclear accident to the whole world.