Bolbbalgan4 (BOL4) has revealed a concept video that raises fan expectations.

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On May 4, through the official SNS channel, Shofar Music uploaded a concept video for the new mini-album entitled “Puberty Book II – A Flower The Butterfly Has Seen” by BOL4.

The published video contains a variety of concepts of 5 songs in “Puberty Book II – A Flower The Butterfly Has Seen”. In particular, with the melody first published and a part of the lyrics, the atmosphere of each song naturally resembles and makes the audience more curious.

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The teaser of the previously announced song with EXO’s Baekhyun will be announced on April 6 with the official poster, thereby raising expectations for the song to be released in the next day.

“Puberty Book II – A Flower The Butterfly Has Seen” is an album that links the album series “Puberty BookⅠ Bom” which received much love when it was released last spring. The tracklist of this album reveals the songs “Blank”, title songs “Hug” and “Butterfly and Cat” featuring EXO’s Baekhyun, “Counseling”, and “Dandelion”.

The new mini-album BOL4 entitled “Puberty Book II – A Flower The Butterfly Has Seen” will be released at 6 pm (Korean time) on April 13 through the online music page and the song “Butterfly and Cat” feat EXO’s Baekhyun is expected to be released at 6 pm (Korean time) on May 7.