In episode 19, the whole class is throwing Izumo a surprise birthday party. There’s a bit of filler in this episode, however not all the 20 minutes is not all wasted, and that’s something to celebrate. In Episode 20 the plot picks up again, and man…it’s quite the episode. Trust me, it’s what makes though all the needless fluff bearable. Warning! Spoilers ahead!
In episode 17, Rin’s full potential is witnessed for the first time in the series, and in episode 18, a very unlikely person succumbs to the darkness. Warning! Possible spoilers ahead!