The original title of this book was: The Transmigrated Youth Could Never Dream of a Mecha Girl System
Though he gained a romance System in a world of crossovers, the boy, given another chance at life, may simply want to see the world anew and sing you songs from another world through the lens of his own experiences.
A considerate System, warmhearted girls, and the chance to live again: he is truly fortunate.
Today, too, will be a day full of miracles.
[Crossover worlds: Saekano + Oregairu + Your Lie in April + Oreimo + Rascal Does Not Dream of Bunny Girl Senpai
This story contains lots of BGM. Think of it as a playlist, and I hope you enjoy it with the songs.]