Sorry but this one disappointed me a lot. I heard a lot many good things about it but it didn't meet my expectations. 
Starting with how the plot was so generic. Okay I can do with a generic plot but there really was nothing in the manga. The stuff could've ended in just 5 pages. It was really repetitive (I know it's a time loop) but it didn't offer anything. 
The art was good but the action scenes were incomprehensible. I really had to strain my eyes and brain to see what was actually happening.
I had a major problem with the unnecessary sexualization of the female characters. And this is a major issue in a lot of mangas which really needs to be addressed. You're doing fanservice??? Um.. no you're just depicting the fantasies and fetishes of your male population. The thing mangakas fail to realise is that a lot of female population consumes reading manga too. And it's really off putting for us.