Kikai Sentai Zenkaiger

The Sound of Curiosity is Vroom Vroom! (1x4)

Air date: Mar 28, 2021

Vroon, the cleaner of Tojitendo, asks executive Ijirude a question, but was chased out by the frustration of being confronted with knowledge Ijirude already knew. Instead of seeking an answer to his own question, Vroon decides to leave Tojitendo himself. Meanwhile, there are strange gongs that start showing up all over the city as people start to box each other maniacally. Vroon appears in the city being chased by a couple of Kudakks, and joins up with the Zenkaigers as they take on Boxing World. This engine of curiosity begins to make his decisions with "knowledge that expands the world".