Shiina Mayuri♀

Mayuri is a long-time childhood friend of Okabe and a bit of an airhead. Mayuri enjoys creating cosplay costumes and has a part-time job at a maid cafe called "Mayqueen Nyannyan". She often calls herself Mayushii, a portmanteau of her given name and surname, which is also what Daru calls her. She has a distinctive sing-song way of speaking, and she typically sings "tutturuu" when she arrives or introduces herself.