Ep. 2: Exorcism Battle

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The Happy Seven were about to fight with the monster that was associated with Amano's bad luck but the student council president shows up (the ally of the monster)and the monster and the president escape. The Happy Seven decides to do the Diveine Spirit Test on Amano and they found out that she has an ability and it stopped her memory from getting erased. After being attacked and saved again, Amano decides to join the Better Fortune Research Organization as their manager. (Source: Wikipedia)