I found this gem from a passage at p. 58 of A New History of Shinto by John Breen and Mark Teeuwen :
“… the Hakami Shrine located within the great Shittennoji temple within Osaka. Hakami was a tooth kami whose cult required toothache sufferers to make a paste of soy beans and bury it in shrine ground. Supplicants prayed to Hakami to release them from pain, at least until those pasted beans sprouted.”
Judging by how little known and obscure he is on the internet, maybe his record of easing suffering isn’t too good?