As I didn't change the bottom part, I felt no need to upload it here. Grab it from the original work. If this is not good practice, let me know.
Also look
...さらに表示 the original thing for printing details, I just got rid of the slit for the header pins, as I want to use it with P4wnP1 and it should look as discrete as possible.
For the lazy people, use this for further info and files: https://www.thingiverse.com/thing:2275029
