Because the Emperor with good health died young at thirty six years of age, counting in the old Japanese way, unexpectedly, there was a suspicious rumor going around about the cause of his death just after he died.
その天皇が数えで36歳の若さにしてあえなく崩御してしまったことから、直後からその死因に対する不審説が漏れ広がっていた。