|Shinomiya Mayumi四ノ宮 真由美|
|Hair||Blue, Long, Sidehair|
|Body||Big Breasts, Genital Piercing, Navel Piercing, Nipple Piercing, Pale, Teen|
|Clothes||Ankle Boots, Ankle Socks, Blazer, Blouse, Bracelet, Crop Top, Crotchless One Piece Micro Bikini, Decorative Belt, Dress, Earrings, Hair Flower, Knee-high Socks, Loafers, Loose Socks, Microskirt, Open Cup Bra, Pendant Necklace, Sailor School Uniform, Sandals, Slingshot Micro Bikini, Tube Top Bra|
|Role||High School Student, Honor Student, Ojousama, Yamato Nadeshiko|
|Engages in||Childbirth, Drug Abuse|
|Visual novels||Main character - Tsuiraku Jinsei ~Seiso Ojou-sama no Yakukime Takobeya Baishun Life~|
Shinomiya Mayumi is a modern Yamato Nadeshiko, her life is great and she is thankful for it, she has nice rich parents who love her, she is popular and scores all the good grades in school. Mayumi is truly a nice person but due her sheltered lifestyle she is naïve and ignorant of the bad the things in the world. She badly wants to meet her prince. Honjou Aiko is Mayumi’s best friend.