This model was created while sculpting All Might From My Hero Academia
You can Watch the overall work in progress: https://youtu.be/J57wApFcRlU
This model is not properly retopo (used auto remesh to reduce the polycount. Later used Multiresolution modifier to add details. So if you want to reduce the polycount. you can use multi-res modifier and unsubdivide multiple times.
The Base Polycount of this model was 44k before applying multi-res modifier.
Polycount:
Verts: 364278
Tries: 728472