When i was reading yumiko's route in Grisaia,i reached an H-scene,and as from what you'd expect i was umm "engrossed"?
then suddenly,my nii-chan came into to the room,and since i jumped out of the chair when the door opened,i couldn't exactly close the VN...haha...ha.....
after 1 minute of silence,he sat beside me,so i just continued with the H-scene.
when it finished,he stood up and went out of the room without saying anything.