The DPP responded to dissatisfaction and protest against the Nagasaki city government's disrespectful treatment of the Taiwanese delegation, stating that Taiwan and Japan should not allow their friendship to be strained by Chinese pressure. The ceremony marking the 81st anniversary of the atomic bombing of Nagasaki in Japan, held on Sunday, August 9, sparked controversy over the seating reassignment of Taiwan’s representatives.

Taiwan's representative to Japan, Lee I-yang (李逸洋), refused to attend to uphold national dignity. DPP Legislator Chuang Jui-hsiung (莊瑞雄) stated that deliberately excluding the Taiwanese delegation from the embassy district at the memorial ceremony was very impolite to Taiwan, so the country must lodge its protest. KMT lawmaker Niu Hsu-ting (牛煦庭) also agreed that Taiwan should not tolerate being belittled and that if Taiwan and the event organizers could not reach an agreement, he fully backs Lee’s boycott of the ceremony.

However, Chuang said that he believes the long-standing, deep friendship between the Taiwanese and Japanese people will not be affected by this incident. He emphasized the Japanese government and successive prime ministers’ consistent support, including their statements that, "If Taiwan is in trouble, Japan is in trouble," highlighting that the two countries share a future in the face of regional tensions.

DPP Legislator Michelle Lin (林楚茵) underscored that the Nagasaki controversy clearly demonstrates obstruction and pressure exerted by the CCP to exclude Taiwan from its official representative position in international activities. Lin urged that, despite China's suppression, the friendship between Taiwan and Japan should not be strained due to China's involvement.