No time-travel, that's for sure. But seriously, most of the time, it's more or less about cute girls doing cute things when it comes to SoL anime (though I freaking love Yotsuba&! but that's a different story).
Back on topic, I rewatched the first Hellboy again. Apart from a nostalgia burst, man, I could spot a lot of plot holes in this movie. Not that bad, though. Just the cast gets a bit out of character in here, Hellboy included