Am.... aaaammm... amm...
Inventory (X button)-> Notes -> Dev Team -> Prostitution
Inventory (X button)-> Notes -> Dev Team -> Sex Battle
and...
More CON stat you have = More H-damage (Yellow damage) you deal.
If your enemy has 15 CON welp... without Nympho Lona or at least 5-6 CON you can't do anything.
Against small and medium enemies 5-10 CON stat will be enough, against big enemies... 15-20 CON stat but... if you have the Whore of Babylon skill your H-damage will be increased therefore even 15 CON stat are more than enough almost the same as Nympho Lona personality H-damage buff but some people for some reason say that 20 CON stat is needed... just... idk why... maybe because you need more stamina for that but i personally don't really see much point in this espesially if you play as Nympho Lona.
In short... it's something like -> your CON stat can't be lower than enemies CON stat 3 times because you won't be able to do any H-damage at all but if you have Nympho Lona or Whore of Babylon it reduces the value of CON stat that required to be able to deal H-damage (it's almost the same as if you level up your CON stat).