An [[original]] character by [[Rakurakutei Ramen]]. 

A magician who went 240 years back in time to give herself a new name and take her own virginity (as well as averting a bad future but that's for much later). She's [[Takekushi Meguru]] from the future, sports a ponytail, star-shaped pupils and maybe even larger breasts than Meguru much to Seren's chagrin.
mitsukiboshi genyuu