Li Mo is just an ordinary game player. When he got the system, he thought his life would be turned upside down. Unfortunately, it was not his life that was turned upside down, but him.

"You dare to think that I was hit by a plane and died!" Li Mo shouted in grief and anger.

The next second, he traveled through time.

When he woke up, he found himself in a city destroyed by the zombie virus, with three unconscious figures lying beside him - Tomoya Aki, Utaha Kasumigaoka, and Megumi Kato.

Looking at these three people, Li Mo fell into deep thought. So does one have to travel through time to obtain the system?

Li Mo: Zeus, right? Take my eight swords and dodge!

Li Mo: Boros, right? Eat my magic sword Dante!

Kato Megumi: Did you kill Zeus because you wanted to?

Li Mo: ...

Lu Jin traveled through time and space and became the principal of a garbage academy on the verge of bankruptcy. He discovered that the school was in a dilapidated state, all the students were scoundrels, the school beauty had transferred to another school, and the teachers had resigned.

In desperation, he suddenly binds himself to the [Strongest School Rules System] and must make outrageous school rules in order to become stronger.

School Rule 1: No leave adjustments are allowed. Violators will be expelled!

School rule two: Teachers are not allowed to assign homework!

School rule three: Classes start at 10 a.m. every day and end at 4 p.m. No involution!

School Rule 4: All girls in the school must wear white silk maid outfits. Violators will be considered absent from class!

Tsundere school beauty: "Are you crazy? Let me wear a maid outfit?" (The follow-up is really sweet)

Bad Girl: "Do you believe I turned your principal's office upside down?"

Cat-eared Loli: "Principal, why do you make me wear this kind of clothes?!"

Netizen: "What kind of school is this? Where is the morality? Where is the bottom line? Where is the address?!"

Lin Ye travels back in time to the start of his second year at Sobu High School, two years before the apocalypse. He decides to change the course of the apocalypse and save the world. As the apocalypse unfolds, the relationships between the girls around him become increasingly complicated. Shiyu: "Tell me, are you still in love with your first love." Yukino: "Tell me the truth, did anything happen with my sister?" Haruno: "Just once, let me be willful for once, after that, you should be with Yukino." Isshiki: "Senior, senior, I have been bought by you now, you have to be responsible!" Kato: "Lin Jun, I seem to know a lot of your secrets, and the pressure is a bit too much. Let me lean on you!"... Lonely Doomsday Helper Kasumigaoka Shiyu Crystal Mutation Helper Yukinoshita Yukino Alien Invasion Helper Yukinoshita Haruno Interstellar Wandering Helper Touma and Setsuna Dark Biochemical Helper Eriri Catastrophic Doomsday Codenames [Resurrection of the Dead] [Honkai Beasts] [Iron Blood Machine Tide] [Deep Blue Sea] [Originium Disaster] - PS: This work involves "Oregairu", "Passerby", "White Album", "Bunny Girl Senpai" and other works.