I watched this anime and, to be honest, I didn't like it very much. Apart from the high Fanservice it has, the story does not completely capture me, it has many details in its plot and people who appear and disappear out of nowhere, but the worst of all is the ending that I didn't like, actually.
Surely the manga is better, that's usually the case, but I don't watch manga, so I'll be left with doubt and bad taste.
Good review.
The fanservice has little to do with the plot but the author knows what type of audience they want to attract so I wouldn't be too hard on their creative freedom. The ending was underwhelming and it's anime adaptation twist as it diverges from the manga. I don't feel strong repulsions toward the anime adaptation, it's a different media and some stories are best told in different forms. I just think the anime could've done better but I understand the limitations of having a limited screen time with only 12 episodes to work with.