In the lead up to his biggest solo concert yet at Zepp Fukuoka on Friday, December 19, 2025, he pours his heartfelt feelings into these four songs, and through music he narrates the journey to that dream stage of Zepp Fukuoka. The second song in his four-month consecutive release series, "Time Machine," tends to be about the past, the thought that everyone has at least once: "If only I could go back to that day," but the song also depicts the determination and strength to survive in the present. His portrayal of someone who continues to believe in themselves and move forward, despite regrets and doubts, gently encourages listeners. The songs are filled with a message that by looking back at the past, you can affirm your present and move forward into the future.