[1][2] The Portuguese found enthusiastic commercial and diplomatical partners among Japanese lords and some, like Ōtomo Sōrin and Ōmura Sumitada converted to Christianity.

[3] That same year, Ōtomo Sōrin requested Portuguese aid to recapture the castle of Moji, then held by forces of the Mori clan.

[4] In what was the first naval bombardment on Japan, the Portuguese ships opened fire on the castle of Moji, allowing Otomo forces to establish themselves around it.

[14][15] During World War II, Japan invaded the Dutch East Indies, which shared the island of Timor with Portugal, who governed its eastern half, where no more than 150 Portuguese soldiers were stationed at.

Although the island remained occupied by the Japanese, Portuguese governor Manuel Ferreira de Carvalho was left in charge of some internal administration.

On April 28, 1942, the governor wrote to Lisbon: Most grave general situation impossible to save face with regards to the attitude of the Japanese towards the population who has suffered horrors without being possible to provide them any able aid seen as the troops do not respect anything.

[19][20] Ultimately, Japanese forces remained in control of Timor until their surrender in September 1945, following the atomic bombings of Hiroshima and Nagasaki and the Soviet invasion of Manchuria.