Read this read this read this read this.
Also, best GJ-bu girl? Best GJ-bu girl.
Been watching some Mondaijitachi ga Isekai kara Kuru Sou Desu yo, despite my hesitation towards the series, given the fairly typical sounding plot and harem-like cast, it's actually incredibly entertaining.
Also, the ED reminds me of Mahoro de Mambo. Yes!