As seen in the pictures above, it seems that Jun has gotten his nose fixed through the procedure of fillers around the nose bridge, since he used to have a bump right in the middle of it. The procedure is non-invasive and is considered by most not to be part of surgery, but for the sake of explaining his change in appearance we have included the picures. Aside from that, it does not seem like Jun has done anything else to enhance his features.
Now it is time to move on to the main dancer, Hoshi. Fans have suspected Hoshi has had some fillers around the nose and chin area, as well as having his eye corners cut to give the illusion of bigger eyes without having to undergo double eyelid surgery. The procedure cuts a slit in the innermost corner of the eye, making the procedure almost invisible and blends in the with rest of the skin once it heals. Usually it is coupled with double eyelid surgery, but without it the results looks a lot more natural, it rather accentuates the mono lid in the best way possible, especially since it has been a trend in the industry lately to have mono lids.
In regards to his chin and nose fillers, as evident in the photos above, Hoshi seemed to have a more protruding side profile, with a sharper chin and nose. The filler seems to have eliminated the previous roundness in his face, to achieve more masculine and defined features, which is very desired in the Korean entertainment industry.
Wonwoo’s pictures above, taken during his time as a trainee and during the most recent Oh My promotions, indicate that he has done some nose related procedures in order to correct the bump he had at the center of his nose. This could either be fillers or full on invasive surgery due to its permanent nature and lack of fluctuation when looking back at his other pictures.
Another supporting factor are the scars found on the insides of his nostril, possibly indicating that he has done a type of nose surgery procedure that takes part of the bone found in the ears and extracts it to be added in the nostril area. The goal of the procedure is to heighten the nose and give it a sharper look. He possibly also added fillers on either side of the nostril and the smile lines, to prevent the flare of his nostrils and minimize movement in and around the area, maximizing the definition of the nose.