Kininaru Danshi ni ○○ suru On'nanoko.

Chapter 81: A public morals committee member who tells the boy she's interested in to massage her arms after swimming lessons in an attempt to get closer to him physically.
Chapter 80.6: Variant Colored
Chapter 81.1: Variant
Chapter 80.6: Variant Colored
Chapter 81.1: Variant
Girls in different positions with same goal.