I'm your son/daughter!!

I happen to play a visual novel, and one scenes here is in the midst of a space between two lovers, a kid showed up and introduced herself as their daughter.
I just wondered on how you would react to such situations where kids where would just pop out from nowhere and say that they are of your flesh and blood?

I'd freak out... and then listen to their side of the tale. Then decide what the fuck I should do.

But I think it'll be kinda exciting.

Does she join in/how old is she? In the VN of course.

IRL I would be like

Probably turn and run

Yup, I agree with you there.
I probably keep silent and get ready to get away from the scene.

Honestly? If a kid showed up on my door and claimed he/she was my son/daughter, I would freak out and would have no idea what to do. Although I guess a good place to start would be to hear his or her side of the story, find out who the mother is and if she is someone I've slept with, then arrange a DNA test to confirm if they're really my flesh and blood.

If they are, then I guess that would path the way to bond with them as a father and daughter/son. Responsbility and all that.

If they're not, I show them the door and tell them to go back to wherever they came from and never bug me again.

This will be my reaction.

I'd be fairly confused as I wouldn't have pushed the Cretan through my vagina.

I woulda guided that child to the door, given him/her a little push out and before I slam the door in its face id be like

They'll have to earn their keep.

Nice idea. Instant proof if it's your son or daughter right there.

I would ask who their mother is.

If she's not someone I've banged: INSTANT VICTORY.

If she is . . . LIE TO THEM.

Assume she's lying and rape. Simple solutions to complex problems.

Meh fine but I would prefer she not be blood related and be extremely young so I can make her call me otou-sama and rape her devour her conscientiously.

They would have to be from the future, as my vagina is still very much intact, and has not yet seen the horror of live birth.

That being said,
I would shit a brick.
and then launch into a series of questions, partly to negate the possibility of them being an android, and partly because I always pictured the future as entirely automated and holographic.

To be honest, I probably wouldn't react much. Sure it would come as a shock, but I'd deal with it in a calm and rational manner.

You were playing Kotori Love Exp, I presume.
Fun stuff, with all those Kotori scenes.

I would get a dna test. If the results turned positive, I'd man up and raise the child. While raising him/her, I would treat the child as a figment of my imagination since I'm 100% positive I'd still be a virgin.

Ask who there mother is and how would they know they my kid

Id shit bricks thats some scarry as shit