Why So Serious? – The Misconceptions of Me is the second part from the third full-length album of South Korean boy band Shinee, released on April 29, 2013, in South Korea. The first part Dream Girl – The Misconceptions of You was released on February 19, 2013. Both albums contain 9 songs each, for a total of 18 songs combined - a compilation albums titled The Misconceptions of Us was released on August 8, 2013. The second part is said to have a darker and dreamier feel to it compared to the previous part. The album was produced by the record label of S.M. Entertainment and distributed by KMP Holdings. As of 2013 the album has sold about 130,000 copies and as of 2016 the whole Misconceptions Series has sold around 360,000 copies in South Korea.

On February 14, Shinee held an event called "Melon Premiere Shinee Music Spoiler" where the group revealed three songs off the second album through a medley, which were described to have a darker vibe compared to Dream Girl – The Misconceptions of You. Jonghyun stated, "Why So Serious – The Misconceptions of Me will show our world views. It will have deep and rough sound. It embodies our groups unique personality and musical sensation". Jonghyun stated "Spoiler" is the main song connecting the two albums, and in a video interview with Billboard, the group confirmed that the song titles to Why So Serious – The Misconceptions of Me were revealed in "Spoiler."

About the making of the two connected album member Onew stated, "It’s our first full album that we’re releasing in a while, so we worked really hard. Minho and Key worked on the rapping, Jonghyun worked on the lyrics, and Taemin worked on the choreography." Taemin described the album as one where each member's individuality shines through their voices, “We know each other best so a lot of our opinions went into this album." Jonghyun additionally adds, "Taemin’s delivery of the lyrics is good. Minho's falsetto is really nice these days. Key is good at English. We know each other's strengths so we split the parts up according to who can shine on what. We had fun working on the album." Fellow SM Entertainment artist Shim Changmin wrote the song "떠나지 못해" for the group, making this his first time writing outside a TVXQ release.

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