Ep 21 – “Big Brother, Where Is This Nursery Rhyme From?” / “Onii-sama, Sorette Doko no Chihō no Temari Uta?” (おにいさま、それってどこの地方の手まり唄?)

Hazuki and Hikaru rush into the trap of the enemy. Meanwhile, Kouhei is at the mercy of a child vampire. Will they be able to force the vampires to retreat?