SPOILERS ahead for the second Tenchi Muyo movie, Manatsu no Eve AKA Daughter of Darkness....
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Alright, in the movie, Mayuka is a girl genetically engineered using DNA from Tenchi and a demon named Yuzuha. Genetically, she's Tenchi's daughter, and spends most of the film calling him "otochan" and glomping him, much to his dismay (and the chagrin of the Tenchi girls). Yuzuha engineered her to exact vengeance upon the Masaki household for something that happened on Jurai some, oh, 500 years again. Geez, demons sure hold grudges. So basically, Mayuka is Yuzuha's tool, and Yuzuha uses her to drag Tenchi into her realm. This involves...umm...well, there's a scene where Mayuka is (very sexually) licking the body of a sleeping Tenchi. She's his DAUGHTER.
And then, in the third movie he really DOES have sex.
...and now you know. I hope that lovely mental image stays with you for a while.
*blinks* Well, curious minds are satisfied ... but *shudder*
heh, ok.. this begs to be asked. Does Mayuka know she's his daughter?? And in the next movie he actually *does* have sex ... I am assuming you mean with Mayuka... does HE know she's his daughter?
OK, more Tenchi spoilers ahead...(for the second and third movies)
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Yes, Mayuka knows he's her father (hence why she calls him "otochan"...and she even says it informally (with the -chan), which peeves the Tenchi girls even more); however, when performing these acts, she's under a spell by Yuzuha. Usually she's quite freaked out when she comes out of her haze, but it's insinuated that she might have some "more than daughter" feelings for him; however, her affection (for the most part) is purely familial. Of course, Tenchi shows her affection as well, which results in much jealousy and the only time he actually hits one of the Tenchi girls (Ryoko - a nice bitch-slap right across her face).
Mayuka then disappears after the second movie...she's a character independant to that movie.
When I referred to him having sex in the third movie, it's with Haruna. In the third movie, she is a character who draws him into her dreamworld she has created, for both of them to live happily together (in place of another certain Masaki). This is where "older Tenchi" comes from, as she has aged him to her liking. Granted, they are also married in this dreamworld, so it's not just rampant sex (and the scenes are BEAUTIFULLY done)...but it's just wierd, because it's Tenchi, the guy who spent the entire series trying NOT to have sex. And then you're like, "Hey!...Tenchi had sex!". Of course, the fact that she comments on how big and warm his hands are doesn't help the shock along...
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::sips her juice box and listens to "Me First and the Gimme Gimmes"::