The apparitions of Mary in Japan in 1973 and those of Amsterdam in 1945 have one element in common: an established Eucharistic miracle that gave the formal proof of transubstantiation, the belief that the ultimate sacrifice of Christ is in fact repeated every Sunday at Mass, as proclaimed by the Lateran Council IV in 1215.
The year 1973, when the apparitions of Akita took place, is also the year when the oldest known Eucharistic miracle, that of Lanciano (8th century, Italy), was recognized by a team of scientists from the United Nations. As for Amsterdam, a Protestant stronghold hostile to any idea of the transformation of bread into the body of Christ, the Blessed Virgin herself said that she chose it to be THE city of the Blessed Sacrament (message of March 20, 1953)!
Our Lady knows what she is doing and she takes her time with us who are so slow of understanding. On March 15, 1345—600 years before the apparitions of Our Lady of All Nations in Amsterdam—another Eucharistic miracle had occurred in the same city! Ysbrand Dommer was gravely sick and vomited a Communion Host he received. His maid threw the Holy Eucharist into the fire. The consecrated Host was found the next day completely intact and suspended in air in the middle of the fireplace. There were many witnesses to the miracle, and the bishop of Utrecht, Jan van Arkel, immediately authorized devotion. Even today in Amsterdam, every year there is a procession in honor of the miracle… even after 1578, when the town became Protestant and prohibits all procession, annual processions went on discretely.
It was a copy of the statue of the Virgin of Amsterdam that cried tears in Akita, in the convent of the Sisters of the Eucharist. In Japan, the weeping Virgin insisted tirelessly in her message to Sister Agnès Sasagawa, that Christ is "really" present in the Eucharist, as if no one believed in it anymore.
In Akita, Our Lady explained that the suffering of Her Son is the reason that the Father’s justice is delayed: "I prevented the coming of calamities by offering to the Father the sufferings endured by the Son on the cross."