Well, I just destroyed the Ifrit.
No, I did not use Komachi. I just destroyed it by tanking Hellfires with Eirin, Reimu, Rin, Kaguya and Tenshi, before swapping in Renko to Galaxy Stop, Youmu to DPS, and Kanako to CLD nuke. Eirin also made use of her own CLD element attack, Mercury Sea. Kanako was dealing over 5k per hit, and Eirin over 2k. While Youmu was also dishing out high damage.
Dead shortly after the 2nd Hellfire. No losses. Props to Tenshi taking 0 damage from Ifrit's attacks... because Tenshi.
Gonna finish off Floor 4 exploration, then kill the last doll, go back for the Pegs, then fight Alice.
EDIT: Also beat up Malice and got the Zodiac stone from it. Love how it gives 0 EXP [Although 2000 Skillpoints]