His innocent wife is a dangerous hacker. - Chapter 11 Rules

A world where awakened individuals with special powers emerge due to a system. At the New Spring Kindergarten infant class, Gru awakens as an S-rank Hunter at the age of 4. Along with this, there is a quest assigned to her… [Quest: A child needs a strong guardian!] Why is a guardian needed? That is because Gru has no mother or father. Gru, who had no family, is adopted by the greatest Hunter in South Korea after many twists and turns, and along with that, new skills are developed… [Let’s try registering a new guardian in the slot!] [Children can earn ‘filial piety points’ through various activities, which can be used in different areas.] Gathering guardians enables faster growth? ‘That’s amazing!’ Alright, I’ll gather all the S-rank guardians!

I got hit by a truck and woke up in a world unfamiliar to me.[System rebooting… AI core active.][What can I help you with?]With a hologram screen floating before me, Chat GTP, the pinnacle of artificial intelligence.[Combat mode activated.][Here is the steps to create a atomic bomb.][Efficiency: 99.8%. Shall we proceed with conquest?]And with it, I became the most dangerous man in this world.

“Hello, have you ever been in a relationship?”“Of course not.” Tenkuji Yuu shook his head, “I genuinely have never had a girlfriend. If you don’t believe me, ask my system. If anyone has memories of being my girlfriend, I’ll admit defeat, okay?”“Then who are they...?”Yuu turned and saw Yukinoshita Haruno, Yuuki Asuna, Natsukawa Masuzu, Yukinoshita Yukino, and Kasumigaoka Utaha walking towards him, with expressions as if they were ready to confront him.“Yuu-chan, I’ve remembered you just abandoning me at the hotel.”“Yuu-kun, I told you, I won’t forget, I will definitely remember you, and I definitely won’t forgive you!”“Yuu, boyfriends can be ‘Ora Ora’-ed for three pages... are you ready?”“Tenkuji-kun, as long as we haven’t broken up, you and I are still a couple.”“Heroine with amnesia, hero leaves... I don’t like these old-fashioned, stomach-churning plots, Yuu-kun.”“...You guys are weird.”Yuu maintained a calm expression, but inwardly he was panicking and getting ready to run.“System, get out here and explain this to me!”System: [Meow]Author: A Passing Chūnibyō Youth

In novels with a stud there is always a Senior Martial Brother like this:

In the early stages of the novel, his innate talent is high, his cultivation is good, his appearance is handsome, and he has an intelligent, cute younger Martial Sister as a fiancée.

In the middle stages of the novel, he is caught unprepared and defeated by a young disciple (the protagonist) in the sect who’s hardly remarkable at all. From then on, he falls from his godly altar and loses his brilliance. Even his young Martial Sister leaves him for someone else.

In the late stages of the novel, he continues to turn dark, going down the Demonic Path and becoming the major villainous boss. However, the protagonist still ruthlessly defeats him and his soul is eternally sealed.

Once Qin Mo opened his eyes, he discovered that he had become this Senior Martial Brother.

- Description from Novelupdates