Ok, I got this plot for a new manga/LN/anime.
So basically the MC isekais a truck and its driver and then immediately sacrifices his virginity to transmigrate to some overly generic European fantasy world where he is the only Asian in existence. When he gets there he suddenly invents civilization by introducing basic concepts such as drinking water, brushing your teeth twice a day, wiping one's ass and taking a shower everyday. After he gets bored of playing self-insert imperialist messianic cringelord, he goes on to screw every 10/10 big titty elf he can find. Oh and they also all fall in love with him because he's the bare minimum of a decent person and are basically his personal servants/slaves. After about two days of Unlimited Breeding Works, the queen of the kingdom he's currently in demands to sleep with him and the king hands the MC his crown because the king has never been able to satisfy his own wife. About two days later, he's ascended to godhood and then warps reality and goes back to GLORIOUS NIPPON upon where he turns into the author's idealized version of himself.