why do fans always have to say that they are just tired because they are doing promotion, aren't all kpop groups doing the same and they aren't as bad as this. Just admit it that they need improvement. Lots of improvement. Sana have little lines yet she can't even sing her parts. She can't always be sick all the time as an excuse why her voice sucks in live performances. She is using the exact same excuse since ohh ahh promotion. Some of them train for couple of years before debut are those years not enough at all? Hate me all you want but they are pleasing to the eyes and my ears are very much disappointed.