As soon as he returned to Japan, he went back to Korea with the Japanese army led by Masatake TERAUCHI and had the Jemulpo Agreement concluded, in which the Korean government agreed to compensate for the damages Japan suffered in the incident as well as the full time stationing of the Japanese army in Seoul Special City.
その直後に寺内正毅率いる日本軍と共に朝鮮へ渡り済物浦条約を締結させ、事件の損害補償とともに、ソウル特別市への日本軍駐留などを認めさせる。