Danzai no Exceed

About this title

That night, Fujima Yamato got involve in serial murder and almost got killed but she was saved by a transfer student, Shinonome Shizuma with a magic. Yamato had been awake at her house. Yamato offers her some assistance for Shizuma who came here to stop a serial murder that was done by a beast, but he gets rejected by her. However, he doesn't give up. Even though he got rejected and follows her but...