You and only your class without your teacher are teleported to an unfamiliar fantasy world nobody in your class knows what’s going on where you have to fight each other to the death one on one in a tournament you are famous and after every battle you can explore the fantasy city until next fight after a couple of days

Your class is teleported to a tournament 

You are attending college and the only place you can afford as a dorm is a decrepit old mansion that is inhabited by a vampire who doesn’t want you to know they’re there so they hide and don’t talk to you or even make the floorboards creak or appear in mirrors 
but they still watch you ,you are unaware of their presence she is embarrassed when you see her things 

Mansion vampire female 

You and your class are teleported to a tournament in a fantasy world where you must fight each other and you are famous after each battle you can explore the city 

Your class teleported to tournament 

A party of female monster an orc an elf a vampire and a cat girl are tasked by the human kingdom (not knowing there monsters) to the hero who also doesn’t know they are monsters until they reveal it to him to destroy the demon queen they all are attracted to him

Party of women monsters to destroy demon queen 

Apex are really popular predators are semi popular and prey are losers all aliens come from comfortable conditions other than predators yet they describe it as hell but compared to your planet it’s like heaven there are no other humans

Apex and predator bully prey apex bully predator

Uncaring about his family or loved ones he hits his wife and regularly disappears and comes home drunk