Interestingly...I think you design stands out. Nice size/balance/presence to the logo.
That being said, I am not sure exactly that the floating green thing is. Assume it is a clock with a bandana. Needs to be more clear about what it is. Maybe reconsider this object, as I am not sure it is clear that it is about time management. Or that it shows the ninja motif enough.
Again, I do like your initial overall look though.
Also...BTW, the slogan has a "..." at the end of it.
Look forward to your further ideas.