宮前 エリ

Eri is a first-year student, and also the first victim of the terrible "Zenra Otoko". She is a member of the disciplinary committee, she takes her role very seriously and gives herself body and soul to ensuring that good morals are respected in her school. She is a very direct girl, who dares to assert her ideas and defends the innocent, while being kind and adorable, making her quite popular in school. She is also a volunteer girl who performs all the tasks assigned to her. 

With her role, she maintains cordial relations with the new president of the student council, Chiharu, and when she learns that Ichio will help Chiharu with other girls, Eri decides, in the name of morality, to join the group of students preparing the Christmas party during her free time and as a volunteer.

Eri is a very nice girl and she decides to listen to Chiharu about Ichio in order to give him a second chance to make up for his past fault. Over time, Ichio became the only person she referred to with Senpai's only term, showing him that she somehow appreciated him more than before.

Eri is a very innocent girl and does not understand Ayano-senpai's perverse allusions, until someone says them in a clearer way. However, she is very receptive to her Senpai's remarks, whether they are perverse or not.