RULES:
-I can only use Izanagi during battle.
-Use of other personas is not permitted outside of battle
-I cannot fuse away Izanagi
-Personas allowed in stock to be used for social links.
-The only party members that can fight are Yosuke, Chie, and Yukiko
-Izanagi-no-Okami is allowed only after the final boss.
Notes:
This battle is probably the easiest boss battle in the entire run. I also got really lucky with the skill cards that granted me God's Hand, Deathbound, and Megidola allowing me to farm even more hands to get overleveled. The strategy in this fight is to make sure you don't use too much SP to save enough for Ameno Sagiri. Other than that just keep on wailing at him.