Boynextdoor has made a comeback, bringing their life stories to the forefront. At a press conference in Seoul, they discussed their third mini-album, "19.99," emphasizing the incorporation of relatable and personal stories. The album, released by KOZ Entertainment, founded by Zico, delves into the experiences and emotions of the members as they navigate the boundary between youth and adulthood. The title track, "Nice Guy," exudes teenage confidence, while "Dangerous" portrays rebellious behavior. The group aimed to make the album more relatable by including unpolished elements and personal anecdotes in the lyrics. The music video for "19.99" features the group performing stunts, including a scene where they are suspended by wires. The members expressed their excitement about the experience, with Woonhak likening it to being a hero in a movie. Sungho described the group's music style as "everyday relatable," promising to continue creating music that resonates with fans and reflects real-life experiences.