【Doze Do / Usagi Ririmu.】A sweet and close sex life with a childhood friend JK

The story of a girl and her childhood friend who are close friends, but can’t quite get into a relationship.
One day, you protect your childhood friend from falling down the stairs, but when you protect her, you break your arm.
A young friend who feels responsible for your loss of use of your dominant hand proposes to do your daily sex work for you.
Two people who have been unable to express their feelings for each other rapidly grow closer after an injury.