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[Credits]

발신인 (Heart Letter)

Lyrics by 이라온, Ji Soo Park (Chapter M)

Composed by Ji Soo Park (Chapter M), L:VIN (Chapter M)

Arranged by Ji Soo Park (Chapter M)

Vocal by 이라온

Guitar by L:VIN (Chapter M)

Vocal directed by William Kim (RODV)

Recorded by 나수민 (BAKE SOUND)

Digital editing by William Kim (RODV)

Mixed by 정진 (J’s Atelier)

Mastered by 권남우 (821 Sound Mastering)

Album Artwork & Animation 문수진

Executive Producer RODV, Chapter M

Producer 이라온, NIve

Creative Director 이라온

Supervisor 장태웅 (RODV)

Artist Management 이우람 (RODV)

Visual Director LEA