I think this is one of those anime that is perfect if you just take it for what it is, a fighting/ecchi anime with comedy elements. I would normally write a long review but I think this could be summarized with a pros/cons list.
Pros:
-Excellent art and character design, a diverse cast with bright and vibrant colors. This anime looks good.
-A good cast of characters that includes all of your favorite tropes done well and with enough subtlety to make them unique.
-An AMAZING soundtrack. This is one I will be putting onto the MP3 player in it's entirety.
-A solid ending (minus the OVA) that leaves the viewer with enough info to decide if they want to read the manga or a solid ending for those who want a one and done.
-Fan service done right (in your face but PG13 rating so it could be funny without being too distracting).
Cons:
-As often seen in these 1 season magic based anime... I don't know how anything works. How does magic work, why were the grimores ignored the second half of the season, how did MC learn all the skills.
-Anticlimactic "boss fight" at the end that resolves far too quickly. MC should have hulked out and done some crazy stuff but instead just meh.
Overall this is an 8/10. It excelled in art/sound, fell a bit short on story but was very good all around.