This is the theory that the real powers that helped Nobunaga govern the whole country were the church and Southern European forces, which were at that time looking to make inroads into Asia with Jesuits in the lead.
信長の天下統一の事業を後押しした黒幕を、当時のイエズス会を先兵にアジアへの侵攻を目論んでいた教会、南欧勢力とする。