This is a comment response video. Thank you for your suggestion!

Second channel: https: //   / @ko-ji2  
Twitter: https: //twitter.com/PhysicsKJ
Twitter ID: @ PhysicsKJ

How to make a physical engine video ① (Installation): https: //   / watch   V = InsWf ...
How to make physics engine animation ② (operation method): https: //   / watch   V = s89CV ...

Software Used
· Unity (main)
· Blender (animation, framework creation)
· Sculptris (3D modeling)
· Tinkercad (3D modeling)
· Mixamo (animation)

Sound source used
MusMus: http: //musmus.main.jp/
Music is VFR: http: //musicisvfr.com/
Free sound effect On-Jin ~ sound person ~: http: //on-jin.com