it was translated as badminton but the sport they played is called hanetsuki which is similar to badminton and its a tradition to play at new years; hence why the blond guy brought up new years. people play actual badminton in japan normally and year round, which is why i wanted to make that clarification.
about the confusion with "imadoki", it's a slang that refers to things that are hot or trending right now. i don't have the raws so i can't give an alternative translation of the line, but since the activities that mikoto said he did with kouichi are very old fashioned (makes sense since he's an ancient urban legend) and nowadays you'd often only see old people playing those, kouichi's friends are probably surprised mikoto knows nothing about what popular pastimes high school boys (which he's pretending to be) enjoy in modern times.
it was translated as badminton but the sport they played is called hanetsuki which is similar to badminton and its a tradition to play at new years; hence why the blond guy brought up new years. people play actual badminton in japan normally and year round, which is why i wanted to make that clarification.
about the confusion with "imadoki", it's a slang that refers to things that are hot or trending right now. i don't have the raws so i can't give an alternative translation of the line, but since the activities that mikoto said he did with kouichi are very old fashioned (makes sense since he's an ancient urban legend) and nowadays you'd often only see old people playing those, kouichi's friends are probably surprised mikoto knows nothing about what popular pastimes high school boys (which he's pretending to be) enjoy in modern times.