The girls debuted the Japanese version of "Fantastic" at a tokyo concert! here is the recording~
this is the original version, it's an OST track
only Tiffany, seohyun & Jessica sang in it so it'll be nice if they release this Japanese version on a single or something with all the girls' voices! I wouldn't mind getting a Japanese version of "HaHaHa" either, if only just to give more attention to that amazing song!