HAM's National Athlete MV teaser released

It's been a while since we've last heard from girl group HAM! The group made their debut September of last year with their song T.T Dance. Earlier this year, the group released the follow up track Doogeun Doogeun, but failed to garner much attention for it. The girls have come back with a new and improved image, much like most of the artists in the kpop scene today. However, rather than going for the darker image, HAM is going for a whiter and mature concept. They have also released the MV teaser for their comeback track The National Athlete. Many say that first impressions are important and I think this group failed to make the correct first impression. I feel as though this group's latest image can help separate them from the rest. It helps that the song sounds pretty great as well! What do you guys think?