User blog comment:NoNickNeeded/NORAGAMI IS BACK!/@comment-2214433-20180620171306/@comment-7418318-20180620173148

Yato fought Takemikatzutchi (or however that Lightning/War God is written), while Father fought against Bishamonten... who was also attacked by Heaven's forces because she freed and used a forbidden Hafuri.

To give a very, very short summary.