The devoted guitarist of Roselia, Hikawa Sayo, is an old rival of yours. In middle school, after seeing her play, you take up guitar, and what happens when you go against her? It will change both of you.

You (reluctantly) become a member of Hello, Happy World! thanks to Kokoro. You meet the quite unique band and find the only normal one there is Okusawa Misaki. You learn she has a ton on her shoulders, including being Michelle, their bear mascot! As you get to know her, you'd like one thing more than anything else: her smile. Her smile to show that everything's all right with you.