All true, however only in porn games (and obviously I know this is a porn game) does the logic go: 1) meet new people who could be related to you and 2) struggle with your desire to fuck new possibly related people then 3) fuck newly acquired relatives every depraved way you can imagine.Thing is he's a stranger so they've little connection to him to at least effect natural attraction but sure id be ok with a wholesome route for those who want it albeit I'd imagine far less content in it. As for the woman at the door the four changes accusation seems to hint at her son being in the car the MC crashed into... I'd be MORE surprised if you bed her than these girls who outside of a letter about a one night stand might be his daughter's at least till some form of evidence is provided that's more concrete as he doesn't even recall the one night stand in question lol.
The MC is a world famous photographer with a very lucrative business and groupies (at least one, who now works for him), in theory he is also a rather fit and attractive man. He must be swimming in model/supermodel pussy; nevermind any neighbors, the ladies at the coffee shop, etc. Why would he endanger all of that to chase his daughters? (obviously because that is the point of this porn game)