Wake up from different people's homes

As the first student who failed in the strategy department of the Space-Time Academy since its establishment, Ye Si was forced to bind a system called "waking up from different people's bed".What to do when you wake up in your ex's bed?What do you do when you wake up from your rival's bed? ... Teacher, why don't you come and save me!Friendly reminder, don't enter if you don't like it!If you don't like it, don't enter!The character setting is very willful, the plot is very willful 1v1, every world is the incarnation of the mentor, regardless of attack and receiving, regardless of attack and receiving, regardless of attack and receiving Protagonist: Ye Si┃ Supporting role: