Rebirth System: Blood and Ash - Chapter 38: A Fools Conviction.

In a realm where even the faintest shadows whisper untold tales, I came to realize that the forgotten often hold the most powerful narratives.As an avid admirer of the world's most beloved series, I never imagined that one night's rest would pull me into its very fabric.“Why on earth am I stuck in this world? And why, of all people, am I him?”I had become Arthur Nightingale—Class A’s most unremarkable student. A magic swordsman barely worthy of mention, ranked 8th among the first-years. A mere footnote in the grand story.Still, with this body’s abilities and my own insider knowledge, I figured I could carve out a peaceful life. Or so I believed.“This was the only way,” the voice repeated, resolute. “The only way to stop her.”Little did I know how truly unique Arthur Nightingale was—or the path this journey would force me to take...

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

Cultivators all have a soul beast, one that awakens at 13 years old.
However, Ye Chenfeng lacks one and is subsequently banished.
Ye Chenfeng obtains the favor of the heavens after years of humiliation.
With his gifts, he will walk his path to the strongest.

- Description from Novelupdates