Quirkless Hero - Chapter 9 - . Daily Training, Steel Wire Technique.

In a one-sided marriage that lasted several years, Shen Heyu made herself the butt of a joke.On the day of the divorce at the civil affairs bureau, Pei Yansi scorned her coldly: 'Shen Heyu, I'll wait for you to come back and beg me!'But once she disappeared for good, the man regretted it.He pursued her relentlessly, entangled her day and night, even kneeling before her begging to get back together.Shen Heyu was somewhat speechless, 'Pei Yansi, can't you act like a human?'Pei Yansi's lips curved slightly, 'Not acting human is fine too, being a loyal dog isn’t so bad.'

A 34-year-old NEET otaku, chased out from his house by his family, found that his life is reaching a dead end. He then recalled that his life could actually have been much better if he had made better choices in the past.

I exist in the darkness, disappear under the bright light, and will eventually devour the sun and turn into the shadow of all things… Known by people as the indescribable terror of darkness; the king of shadows; the dark day; the existence of the shadow of the world , is still just a somewhat special high school student, facing a weird death game…

- Description from novelbuddy