[Black-bellied + Old Six + Time Travel + Villain + Multiple Female Protagonists (No Cuckold, Don’t Be Swayed by the Comments)]

Su Xiaobai traveled to Tianshang Continent and obtained a "Heavenly Book" that could predict the future, and knew everything that would happen in the continent in the next thousand years.

The "Heavenly Book" required him to advance one small realm every year, but unfortunately his talent was too poor and there was no hope for him to break through.

By chance, he obtained a set of skills, so he set his sights on the goddess senior sister...

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?!"