Taesan from BOYNEXTDOOR is causing a stir among netizens with the group's comeback trailer film.

An online forum is ablaze with discussions about the video. Of the many mesmerizing elements in the clip, member Taesan's appearance has been especially gaining attention for his atmospheric looks, gestures, and gazes. 

What caught the attention of many is Taesan's ability to effortlessly pull off the 'dangerous youth concept.' Netizens were surprised to see him tackle a bold concept and praised his exceptional looks.

Reactions include: "Wow, he's handsome," "His looks are overworking," "I LOVE this concept," "Crazyyyyy," "A dangerous youth type concept...," "He's hella handsome, and I can't believe he is doing this kind of concept," "This trailer really suits him," "His looks plus this concept..."

The trailer serves as a teaser for BOYNEXTDOOR's upcoming 1st mini album, 'WHY..', which will mark their first comeback since their debut with the single album, 'WHO!'. Fans can look forward to the release of the album on September 4 at 6 PM KST.

What do you think of the trailer?