Watching so far. Here's my constructive criticism:
Cut out the first minute. It's nothing but trial and error for starting up the game, and doesn't give people a good feel that you know what you're doing.
Pick a game you know by heart and enjoy playing a lot for your first LP, I cannot state this enough:
One of the most important things to keep in mind when picking a game, especially for your first Let's Play, is to pick a game you will enjoy. If it's your first Let's Play, a game you have passionately played at least a couple times will make a much better Let's Play than something you don't enjoy. For your first Let's Play, picking a game you already know by heart will make coming up with commentary for the game much easier for you.
If you can't read Japanese, either speed up the cutscenes or provide interesting commentary during them. You seem to be going for an informative style of LP, where you're telling people about the game as you play it. If you don't know the plot or what's going on in cutscenes, this is very bad for this style.
Also, Let's Play Guide for Newbies.YouTube Videos for LP Advice.Also, are you doing post-commentary or live commentary? I'd recommend post-commentary for new LPers, given that it allows you time to refine your work and think of stuff to talk about.
Hope I wasn't too harsh.