Senran Kagura: Shinovi Versus sadly comes with no antialiasing whatsoever and doesn't look as good as it can. But thankfully this can be fixed with the help of a third-party program.

Download Nvidia Profile Inspector[github.com], create a new profile for skshinoviversus.exe, then set the following options:
Antialiasing compatibility: 0x004412C1 (Diablo III)
Antialiasing - Mode: Override any application setting
Antialiasing - Setting: 4x4 [4x4 Supersampling (D3D only)]