Not bad. The only real issues I have are with the voices, or lack thereof.
First, the beginning description and ending description are COMPLETELY unnecessary.
Second, the voices clips (while well done) are too long. It doesn't sound good when one character talks and another doesn't. It's usually okay to say things in battle, but to have a conversation where one character is talking the whole time and another isn't is just weird. You really should get some voice actors for this series. I think it would benefit a lot if all the characters could talk. Considering it looks like it's supposed to be in an anime style, it just looks strange to have the characters not talk