This episode is mainly about music, where the vocalist of ZHIEND, Sala Shane, accidentally bumps
into Yu, wanting to eat 'Modern-yaki'.
Jojiro and Yusa cleverly dodge it and lets Yu go with Tomori.
The ship sails.
So, as Yu brings her to eat and stuff, Sala notices the despairing aura Yu unleashes and Yu then tells her that he recently lost Ayumi in an accident. Sala then insists on paying respects to Ayumi.
After that, Yu calls Tomori to ask for permission to bring Sala to see Tomori's older brother.
After Sala sang for Tomori's brother, Tomori was contacted by the hospital and her brother recognized her.
She was very thankful of what Yu did.
And at the very end, Yu continues to wonder why ZHIEND music makes him feel nostalgic.