Good news: A girl confessed her feelings for me!
Bad news: I died against the steel plating on my girlfriend's chest!
Good news: I came back to life, and now I'm a mecha!
More good news: My pilot is a big, beautiful rich woman. I can live off her now.
But why does my main wife sleep eighteen hours a day?
Honey, stop sleeping! Your classmates and your sisters all want to keep me!
Guess I'll have to make a living off them whether they like it or not.
(A little comedy, a little sweetness, a little wild imagination, and a touch of fighting. I won't make promises I can't keep, in case I get smacked. Multiple heroines, all get together with the protagonist, and there are kids. The protagonist isn't impotent.)