Yuuma, a timid college student who has been summoned to a different world. It was thought that a fun...
Guy is summoned to another world with a few others and winds up with OP regenrative abilities that get him locked up in an unground lab being tortured as a human test subject. Gets a chance to escape by finding a very pretty vampire who's happy to protect him. Sadly, the sort of people who would dismember a guy for SCIENCE are not above lying, so now the other summoned heroes are hot on their trail to 'rescue' MC from the undead monster who 'kidnapped' him to freedom.