انیمه Erotic Encounter of the Alien Kind

A falling star (Alien) crashed into Amano Inori to death. But with the technology and power of the star (Alien) can revive and improve his body again. Amano now has a body that is more sexy, smarter, more clever in sports. The aliens were assigned to observe humans on Earth, but there was no reaction, until in the end when Amano was embarrassed to see Sugiuchi. Eventually the aliens manipulated Amano's body.

(Source: Nekopoi and Has Been Translated)