"Rose Blossom" by H1-KEY is a song about persevering through difficult times and rising above any obstacles. The lyrics describe a beautiful rose that has bloomed in between buildings, a symbol of hope and resilience. The singer asks for protection and stability, acknowledging the struggles they have faced but finding strength in their surroundings. They express a desire to continue growing and blooming, despite the challenges they face. The song's message is one of hope and the importance of believing in oneself, even when things seem impossible.