Comments by "Kasumi Rina" (@KasumiRINA) on "End of the Samurai - Black Ships - Japanese History - Extra History - Part 1" video.

Or MAYBE the national superiority complex and xenophobia were fueled by 200+ years of isolation and government demonizing everything foreign, and an attempt to turn them into a less jingoist society so people could peacefully trade was pushed back by reactionaries who played nationalism to the max.
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There were also Portuguese way back in 15th century
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Before Sengoku era, yes, but by the 16th century most samurai transitioned to being lancers, and wars were led by pike and musket formations. Archery became very limited and only filled the ranks between ashigaru spearmen. BUSHIDO though, was a codex invented WAY later in Edo period when horses, spears and bows were all phased out and swords became more a status symbol than a weapon of war.
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Note that after Hideyoshi died, the Toyotomi Shogunate eased persecution on Christianity (while still hating foreigners), but after losing Sekigahara, a lot of Christian daimyos were on the Western Army side, so they lost power (in Yukinaga Konishi's case, also his head), and a few Tokugawa emperors and many discriminatory edits later, the Shimabara rebellion led by a Catholic boy Amakusa Shirou broke out, and Christianity was outright banned after Buddhists massacred all Christian women and children. Surprisingly, in the shadows, Japanese Kirishitans as they called themselves, kept their faith alive for over two centuries in isolation.
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