Iria Fukumune

Lisaras rival Grim Reaper during her school years at Grimwald who is also a famous pop idol in the human world. Despite being 2nd in the school 1st being Lisara she has the biggest bust size of the main cast 92.5cm. However her large breasts are revealed to be a result of infusing breast pads with magic and her actual bust size is smaller than Lisaras. Her weapon Froddy is a falchion. Source: Wikipedia