rpg nsfw games in which its placed in some alternate world futuristic and the protagonist has a childhood best friend and they are defending the world I think im not sure and the best friend is a girl she has sex with people to fuel this mech that runs on negative emotions that the protagonist will fight in and these memories give him powerups through negative emotions and its an nsfw game. It's something where they gather these memories by the best friend having some sex with other characters around the map and they use these memories to power up this mech through the protagonists negative emotions or something. I played it a really long time ago and I think it was an rpg game like one of those vx ace or rpgm games.
