Well, if nothing else, Chronos Ruler wastes no time demonstrating its semi-decent-looking action; if only its premise were a little easier to swallow and its characters a little more likable.
Koyuki, a high school girl who blames herself for losing her only family, her brother (killed in an auto accident—the leading cause of death for big brothers in anime).
One night while visiting his grave, Koyuki ends up in the middle of a battle between some kind of monster and two apparent brothers, Victor and Kiri, who rescue her and force it to retreat.
Victor lets perhaps a little too much of his and Kiri’s secret duty slip on purpose, so Koyuki, following up on school rumors about turning back time at the clock tower at the midnight of a full moon, lures the “time demon” back to her.
One of Koyuki’s teachers, Ms. Emily, ceases to exist by aging in reverse, a somewhat unsettling example of what happens when one gets bitten by such a demon.
Victor knows simply telling Koyuki not to give up on bringing her brother back won’t work, but between Ms. Emily and his own condition (every day he becomes a day younger, losing his memories along with his age), there’s enough to get Koyuki to heed their warnings.
Victor uses the “oath of time” he and Kiri, “Chronos Rulers”, possess to defeat the demon using limited time manipulation, but it accelerates his “illness,” but Koyuki is safe, and content to live on with the memories of his bro.
Of course, it’s likely we’ll never see Koyuki again, as the pair will be off on their next mission next week. As for learning Victor isn’t Kiri’s brother but his father really only caused me to shrug.
I dig time magic; I just left this episode wishing more interesting people were wielding it against more interesting foes.