The story progresses automatically like a novel in auto-mode, and you can also control the story and what happens to the girl's body with the interactive mode
Select panels appear in the screen to see your kid sister taking clothes. She strips her clothes one by one. Can you complete the game and see her naked?
Moromi and the School Sports Festival is the story of a slightly perverted school sports festival that unfolds with your little sister -- the naive and big-breasted Moromi.