Here is "Hex Girls":
E---G---
GAAA---z
Low E, all other notes high.
Here is "Little Witch Academia (TV) Original Soundtrack Disc 1":
A-DAA-AB
CDBAA---
First A and first D are low, all other notes are high. I did have to speed it up a lot to fit the whole musical phrase into the town tune. You might try changing the placement of the - sustain lines to change the timing if it doesn't sound quite right to you.
Unfortunately the second part of that video that you requested has a combination of sharps and flats that cannot be accurately recreated as a town tune. I can make an inaccurate version if you'd like, or I can try a different part of the song or a different song, just let me know.