Here are my logos. They are all minimalistic and original logos that are appropriate for the concept. None of the images used in them are taken from somewhere else, they are all made by me.
Here is what the logo with the crescent shape symbolizes: Ninjas are known to go out in the night, when it is dark and therefore they can do whatever they want to do without the risk of seen from someone else. So, it is a symbol for the secrecy of the ninjas,
And the other one has a more friendly and intimate looking. And it has a ninja vector.

My Dlive username: @onlymirana