This episode of Meisaku is inspired by "Urashima Taro" from the children's song. Bolt can not sing the song "Urashima Taro" to the end. An "Utashima Taro" appears and tries to teach him the correct lyrics...and fails.

Utashima Taro is voiced by Yuyu-uta, a YouTuber.
I've tried singing it lots of times, 
but it always ends there!
!حاولت غناءها مرّات عديدة لكنها تنتهي هناك دائما
Ich versuche es schon die ganze Zeit,
aber es hört einfach auf!
J’ai beau répéter,
elle se termine toujours là.
L'ho provata un sacco di volte,
ma finisce sempre lì!
Eu tentei e tentei,
mas a música sempre acaba aí!
Я пел её сто раз, 
и всегда заканчивал на этом!