Where is my wonderful isekai world?!

WARNING contains adult stuff - but not the good one! do not read if you can't keep up with psychologically demanding stories! Cover by Trix The Thing https://toyhou.se/TrixTheThing A mysterious force from another world crashed into a certain high school teleporting all the students- ...nah its not like that Life is not fair and when a person tries to at least make one decision by themself, they soon realize that it could get far worse.