Do you know the name or code of the Japanese movie?

Hello friends, I saw a Japanese movie two years ago, and now I want to watch it again
No matter how much I search, I can't find any trace of it
please help
Movie details:

3 boys (who are adults playing the role of a boy) who were playing with a water gun come to the house.
A woman with a short skirt was hanging clothes in the yard and when she comes inside the house
The boy asks her to show her underskirt
He slowly pulls up the skirt and shows his underwear
Later, the boys have sex with her on the table

This movie had three parts

Every part, the actress would hang the dress in the yard and then when she came inside the house, she would raise her skirt at the request of the boys, and little by little sex would happen.