Question: What is the English translation of the Japanese song playing while Takashi is finishing the tricycle race?
Question: Is there an artist and title of the steamy mellow song played when Lewis and Betty start to have sex on the "moon" in the funhouse? Is it a real song or was it just made for the movie only?
Answer: First, Lewis and Betty are not "having sex" - he is raping her, and the writer and director later described it as "not excusable" (https://decider.com/2019/07/26/revenge-of-the-nerds-rape-scene-regret/). Second, the song you hear is "Right Time for Love" by Jill Michaels and Pat Robinson. It was not written for the film.
Chosen answer: It's the song "Daisy Bell" by Harry Dacre.
Grumpy Scot