A Professor of Magic at Hogwarts - Chapter 10: "Felix’s Wisdom Tooth"

In a world of endless star fields and interdimensional wars, the wizards' floating city conquered one world after another.At the wizard academy, through blood-stained exams, the towering wizard tower sent wizards batch after batch.Becoming an apprentice wizard, Richard activated the miracle furnace deep within his soul, where constant refining of materials granted him knowledge and skills...The veteran's weapon could be refined into legendary martial arts techniques.The ancient wizard's encrypted notes could be refined into lost knowledge.The remains of brutal monsters could be refined into monster bloodlines.In this era of great voyages in the wizarding world, Richard was destined to become a leader of his time.

On an ordinary day, an inventory livestream descended upon the dimensional multiverse. Those who were selected all had a faint blue light screen appear before them.Immediately after, large characters appeared in front of them.《 Dimensional World Inventory — Top 10 Famous Scenes 》 Scene 1: One person, one sword, guarding a city, battling seventy thousand...Scene ***: The man who almost kicked out the grand finale, Eight Gates Formation! Might Guy!Scene ***: Menma, I found you!Scene ***: .....As one scene after another of regretful characters appeared, everyone watching the scenes shed tears.Monkey D. Luffy: That's amazing, one person, one sword, not only fought against seventy thousand people, but also returned alive?Uzumaki Naruto: I didn't expect that seemingly ordinary guy to be so powerful!Uchiha Sasuke: The one who made the final save was actually you.Jinta Yadomi: Menma, we found you~Everyone: Menma, we found you~Honma Meiko “Menma”: Hi! I've been found!

Feng Lingxi was the traditional family’s head mistress – a person with a charismatic yet sly personality with the ability to attract people easily to her side, and having the potential to take someone’s soul away. Crossing across boundaries from a decade ago to now, a world that gives woman full respect and acknowledgement….

Don’t be fooled by her, because she was someone who would act obediently in front of a crowd but, stabs them in the back when necessary! Disguising as someone that would gain her trust and belief! That was why the Emperor of Xian started doting on her, allowing her to become absurdly daring to do whatever she liked. This made the Empress speechless to tears.
That would be the cause of the kingdom’s downfall in the near future…

- Description from Novelupdates

This crossing is so strange, death crossing, game crossing, etc. are probably barely acceptable, but why can you cross even if the fish tank is broken?

and actually passed through the magic tree in “OVERLORD” that is said to be able to destroy the world?

No! It is sad enough to regenerate into a plant. The protagonist, Ainz Ur Gong, the undead king, has also accepted the adventurer’s guild mission and wants to kill me!

I want to change my destiny! Live! I want to-surrender!

Ainz: Since he has accepted the job commission from the Adventurer’s Guild, deliberate failure is detrimental to the prestige of Ainz Ul Christine (the “surrender” button has been deducted)

actually died as soon as he crossed, but there is still a chance to return~ from the beginning of the magic tree to this world.

I must change my destiny this time! Live!

- Description from novelbuddy