Furious Gigas: Weak to Garu spells. Easy boss battle again.
Fanatic Tower: It pretty much blocks or is resistent to everything except Strike attacks and Garu spells. Take-Mikazuchi blocks its Zio spells, and you can also let it learn "Garu" by giving it the Spell Card you get from leveling up the Persona "Angel". For this battle you want a party of Akihiko (who's resistent to Zio) for debuffing and Junpei for attacking. I would also recommend Mitsuru as a healer, but since I never leveled her in this playthrough I just had to go with Aigis.
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