What do you think about [Review] Surfin’ Boy – Red Velvet?

K-pop fans are talking about "[Review] Surfin’ Boy – Red Velvet." It has been a while since we last heard from Red Velvet. The five-member SM group have been focusing on solo and unit work for the past 2 years since Cosmic, the title of both their last title track and mini-album. That changed earlier this week with Red Ve... What stands out to you most about this update? Do you agree with the reaction so far, and what do you think could happen next?