Surviving as a Mage in a Magic Academy - Chapter 41

To save a doomed fantasy world, I killed the main characters, then destroyed the game world, and fell into another timeline as the academy's top seat and rival to the protagonist.Now, I'm trying to save the world and steer it towards a better ending…But I'm the final boss.

200 years after the world has ended, the laws of society have long been forgotten.

When Hao Shuai discovered that he had the ability to travel through the heavens…

What? Does anyone want this treasure? no one asked me to take it

What? This treasure is yours? But Pindao feels that this thing is destined for me

Remember, after I die, I must throw my body into the sea, because in this way I can continue to surf.

- Description from novelbuddy

Utsuro no Hako to Zero no Maria, or The Empty Box and The Zeroth Maria, tells the sinister story of Kazuki Hoshino, who is almost madly attached to his everyday life, and his antagonist Aya Otonashi, who suddenly transfers into his class—for the 13,118th time. She majestically announces to “break” him, without paying heed to anyone else around them.