FOCUS on YOU
https://store.steampowered.com/app/1032670/FOCUS_on_YOU/
The game is created on UE4, so we can easily create swimsuit mod.
(Example) Innocence swimsuit from DOAX3
The modding method is essentially the same as SFV.
Some tutorials can be found at Youtube:
https://youtu.be/7dei4o3r6kM