Some Japanese Christians claim that Jesus is buried in Japan. They even have a tomb.
Japanese Christians are... interesting. If I remember my history correctly, the church in Japan was subjected to persecution, and in the midst of that persecution they lost access to both the Scriptures and missionaries, and so the relatively new Christians had to reassemble the Scriptures as much as they could from memory.
it’s based on the same story as the “tomb of prophet Isa” in Kashmir - these are based on the life of Apolonius of Tyana, a Stoic “holy man” who lived in the second half of the 1st century and DID travel to Kashmir.