Nice! I had a lot of fun with Python itself 20 years ago, more than any other language at the time. I even tried to make an all-Python userspace for Linux, but in those days I would get discouraged when I couldn't implement exactly what I thought I wanted. I didn't have the skills to implement mount and other system utilities in Python, and felt I as spoiling the purity by bringing them in as binaries. (Concern for imagined standards of purity has always been my biggest problem with programming.) Anyway, I liked Python very much when it was simpler. If I ever get to thinking I do want complex syntaxes (not Forth, Lisp, APL...), I'll be sure to give Kuroko a try.
Before I saw the reference to the anime, I websearched and found kuroko are stagehands in traditional Japanese theatre. I think that's an excellent metaphor for a scripting language.
Looking at the examples..
That's an interesting way of creating a static local variable.
I think you've got a typo under Lambda functions. The example defines myLambda but references myLambdaa.
Woot! Implicit `self`! I got so tred of typing that, back in the day. XD
Typo in the `set` example: the last print is "pritn".
The C-style loop has `i = i + 1`. Nothing wrong with that, but `i++` is the more instantly recognizable form.
Oh oh oh! `if` can be part of an expression and return a value! I always liked that much better than `?:`
What's the purpose of `with`? Just temporary variables?
Evaluating default arguments at call time is good. I remember being very confused by the way Python did it.