|Debut||Never Back Down On Love|
|Japanese Voice||Mariya Ise|
|English Voice||Felecia Angelle|
Eriko Oniyama (鬼山 江梨子 Oniyama Eriko?)Voiced by: Mariya Ise (Japanese), Felecia Angelle (English)A member of the Invisible Storm. She is eaten by Ginko and Lulu .Kureha's classmate and a member of the Invisible Storm, as well as the second leader of the Storm, appointed as leader after Konomi's death. She is seduced and manipulated by Mitsuko into becoming the leader in order to ensure Kureha's exclusion so Mitsuko can target and eat her; however, Ginko and Lulu lure Eriko to the flowerbed and eat her as part of a plan to protect Kureha. It is implied that Eriko was friends with Katyusha from her conversation with Ginko and Lulu.