Boku no Otouto-kun

"Boku no Otouto-kun" is a music video created for Kazuki Kosakai's song of the same name. The song was featured on NHK's Minna no Uta, a program known for its animated music videos. The video's setting and characters are not explicitly defined in the description. However, given the song's title, which translates to "My Little Brother," the video likely centers around the relationship between siblings. The thematic elements are expected to revolve around familial bonds, potentially exploring themes of love, rivalry, and the everyday experiences of growing up together. The music video's visual style and narrative are designed to accompany and enhance the emotional impact of Kosakai's song.