Love the art! I just finished it~
Got the true ending but not sure how to get the other one. There are a few things that annoyed me, first even if I won against Erif the scenario of me losing is played, second is the other cave if I go there before the kidnap cut scene it still works, third is the fights are very easy most of the time I don't get damaged at all.
Over all I quit enjoined it! Also love the beelzebub ref~