Stop The Earth, I'm Getting Off: Crystal City

You are young and smart but your thick-lensed glasses make you undesirable in the prime of life. Nonetheless, an unexpected chance turns up for you to become a man. During sex you are teleported to another world... and it’s up to you to have to save it from a global disaster! Eventually, you need to find your way back home... But how?.. The same way you got here! – find a girl but don’t fall in love because you will probably never see her again.