Daddy poof
At the begin of the game you know nothing. With the reveal that your father left the family for reasonable reasons or just because plot demands it, you somehow realise that you have a dick in need and some pussy to feed. This hole in your past is also the reason why you wanna bang your sister/aunt/mom/cousin stepdoggo. Sometimes you ask yourself: "Why Dad? Why did you left us?" But not so much for getting into a foul mood when there´s soooo much money. Yes, the unexplained vanishing of your Dad also left you something nice to compensate: a fuckton of Money, a grandioso Mansion(with optional suspicious neighbors) or your own company.
Sometimes you don´t need to grind for cash to buy stupid things like surveillance cameras for your sisters bedroom anymore but sometimes you still do need cash for other shit to buy, although your filthy rich for unknown reason you can´t tap into that wealthy pool.
Your family members rarely show sadness or grieve for their fathers or husbands absence. Too much to bare all the emotional impact when your ready to enjoy some lewdy sloots in noody shoots. Just roll with it MC. Most of the time, daddy just left.
They talk about it once, maybe twice but then life goes on. It also gives a fair reasoning why your older or younger
sister gets attached to the MC and why you go full Aí Papí on everyone else(including mom, aunt, secretary, outerdimensional ice cream vendor or stepdoggo) because everyone has to know you´re Jon Plough now and you gonna use the D mercilessly. It´s a rough world out there after all and your family needs protection ... mostly paid in sexual favours of some sorts.
Sometimes the disappearance of daddy can leave the family in
Financial distress, so MC has to climb ladders of unknown origin to be the Man of the House. Includes fucking everyone, too.
Examples: Big Brother, Bad Brother Saga, Man of the House, Summertime Saga
This trope goes hand in hand with the
The Digsite: Just when you hit puberty, the spontaneous enlightenment of your consciousness or some other sort of an introduction to the game, someone tells you abt the secret never told to anyone mystery of the family... which you aren´t aware of because your dick and so you as yourself were sleeping for years after your birth. It´s just now that it´s convenient for the hollow plot to tell you so. *whispers* a weeewwyy weewy dark secret ... yeeees. In some cases even your littlest younger sister knew about THE obscure family mysterioso and when she discovers that you didn´t she goes into full "i can´t even"-mode and uses it to play with you until some updates later she can suck your dick.
And you´re set out on a journey to reveal the mysterious mysterity that has hung over your family for years or centuries even. Very comfy way to throw some shit at MC: an unknown sister, a friend from your father, locations to explore or stats to grind. Most of the time, the oh so mysterious mysterioso dark secret is more or less stupid in conclusion and could be solved easily in one form or another.
There are some instances where the secret isn´t a secret, MC never had parents of some sorts and he doesn´t care.
Surprisingly it´s never the mom that disappeared and left the MC and/or family with sick wealth
Examples: A new home, The Family Secret, Dreams of Desire