Kininaru Danshi ni ○○ suru On'nanoko.

Chapter 85: A gyaru imouto who goes in front of her brother and starts cleaning the entryway when he tries to leave to prolong their time together.
Chapter 84.6: Variant Colored
Chapter 85.5: Colored
Chapter 84.6: Variant Colored
Chapter 85.5: Colored
Girls in different positions with same goal.