From what i read from other ppl spoiler its the opposite. In fact sanyu know what og sihyeon going through and saw it but decide to ignore it just like other members.. no one actually helping the og sihyeon.
well, at least youre now aware that you should stop being so pissy about things, jaekyung. TAKE BETTER CARE OF OUR KIM DAN AND PLS PERSUADE HIM INTO SEEING A DOCTOR. ╥﹏╥
EURGH WE'RE ALL GONNA GET LONELY AT THE END BUT GO ON THATS A PROBLEM FOR LARER