As to the human trafficking theory, there is one sentence in "Goshuin Shishoku Kokaku" prohibiting the selling of Japanese to the southern barbarians by the Japanese, but there is no material other than this and the content is 'to Great Tang, southern Europe, and Goryeo,' not written with regard 'to the missionaries'.
人身売買説に対しては『御朱印師職古格』に日本人が日本人を南蛮人に売り渡す事を禁止する一文があるが、それ以外には史料はなく、内容も「大唐、南蛮、高麗に」であって「宣教師に」とは書かれていない。