My System: An Evolved Computer I Made With My Unique Ability— - Chapter 13 Fight To The Death!

Uchiha Kai has been cautious since he came to this world. He vowed that he must be cautious and go to the end.

But one day he received a mission – to cover the wave wind team to blow up the Kamabashi Bridge, Uchiha Kai knew that he was going to be unlucky…

- Description from novelbuddy

One drunken night, my friend blurted out something absurd.“Su-Hyeok, I’ve regressed.”“Regressed?”“Yeah, I’ve returned to the past.”“Are you out of your mind?”“You’re humanity’s only hope.”Then, I was dragged into the tower for real… but who cares?Regressor? Tower? Trials? What are those supposed to be?An overwhelming talent is about to crush everything in its path!

Dear comrades, masters, priests, masters, fairies, demons, and leaders, welcome to my world and enjoy the supreme pleasure and supreme enjoyment brought by traveling through various worlds (funny laugh).

- Description from novelbuddy

Jack died an embarrassing death and was reborn as Tony Stark in the Marvel Multiverse. He found out that the reality he was reborn in was a mixture of The Marvel Ultimates, other Comics, and a little bit of MCU, which wasn't good news for him. Too many enemies and unknowns. No way of knowing which event will happen when. No way of knowing who is good or who is bad.Thus begins Jack/Tony's journey of survival. He will do anything to survive and achieve his goals, no matter the cost.---Before you ask> No, this isn't a part of any previous series. This is a new ff.---MC isn't a saint. He'll do anything for survival. And MC won't be OP in battle from the start. He'll struggle and learn from failures and improve, for the first part. And this is a technological advance world. Finally, DON'T COMPARE REAL LIFE TO A FANFIC AND THEN ARGUE.---[The cover picture is AI-generated.][I don't own DC or Marvel except for my own OC][Harem? >Yes.]----Support Link:-https://www.patreon.com/XcaliburXc [15-17 advance chapters]----------