Iwashita, Ritsuko

岩下律子

Ritsuko Iwashita is a student in Class 2-B at Fumizuki Academy and is good friends with Mayumi Kikuiri.
In Volume 1, she appears to be strong at math, but she is still quickly defeated by Mizuki Himeji. In Volume 2 and the Matsuri OVA, she and Mayumi fight Akihisa Yoshii and Yuuji Sakamoto due to technical difficulties during the Summoned Being Tournament. Even with a 116-point lead over Akihisa, she loses because of his Shoukanjuu's agility and his teamwork with Yuuji.
Her Summoned Being differs the most across the series' media. In the manga adaptation, it wears a black ninja uniform and wields a katana. In the anime adaptation, it wears Western-style armor and wields a sword. In Episode 2 of the Matsuri OVA, it has bunny ears, wears normal girls' clothing, and wields a giant hammer.