The bomber reminds me Accelerator in both the style he talks/moves and how he became from evil a good person
Still surprised that Mana seems to want be in relationship with him even though she's around 10 years old. Wondering how Shiki is going to approve of him
So the brow haired girl, Shiho Shizune was unrelated with Shiki (for a moment I thought that she was her daughter)
Also Mana seems to be copy paste of Kokutou's character and eyes/hair.