Oresama have been kicking around for a few years now, finding success online thanks to close ties to various anime and manga communities. It helps that they make bright, bubbly dance-pop songs, such as 2014’s “Ookami Heart.” Well, they did do that, but late last year they ventured into a smoother, more in vogue territory with a far less interesting bit of cartoon disco that probably should have been left for Shiggy Jr. But now they’ve gone head-on back into their electronic sound, and “Hi-Fi Train” finds the pair raising the bar for themselves just by going faster. “Hi-Fi Train” just zips ahead, leaving plenty of space for singing and other details but always feeling off of its feet. And it all comes together for a sweet chorus. Listen above.