Eri
About
Age: 22
Birthday: March 18
Eri is Mayuri's cosplay partner. Eri attended the same Middle-School as Mayuri.
Eri is a sweet and considerate person, when she saw a young Ririsa at an adult event she gently asked her to leave after Mayuri confirmed that she was underage.
Girlfriend of Mayuri Hanyuu as of chapter 161
(Source: 2.5 Dimensional Seduction Wiki, edited)