SAD.

Yuunagi's memorable first song.
A song that sings about the conversation and fun of performing creative acts and communicating them to others.
It's also a song that resonates when you have something to say to someone other than creative activities.

As for the music, the vocalist Akane's husky voice, Yassan's guitar riff, and lofi beat create a pleasant beat.

Also, although the title of the song is sad, the lyrics are positive and interesting, expressing Yassan's sense of playfulness, and also the meaning of moving forward despite some sad things.