Unlike sumire 16 sai, this is a spin off rather than a sequel. You can read them seperately. This version is a more young adult version with sexual anxiety and dating focused unlike sumire 16 sai. The Art is different the characters are different too. So you would get a basic understanding the puppeteer keeps going to highschool everytime he graduates he re-enters highschool. He is like a teacher technically. So this version is supposed to be after sumire 16 sai. In this version sumire instead of firey confident never give up hero, she is instead athletic, shy and perverted. I do believe the original cuterversion was a lot better, it focused on friendship and longer stories. This is helping student of the week,