Transform as a Magical Girl: I Finally Became a Magical Girl, But I’m Stuck in an R-Rated Fantasy World Where Tentacles Won’t Stop Attacking Me - Chapter 120

The demon, who had tossed and turned all night, unable to sleep, came to a conclusion as dawn broke.

It’s my fault. If I do well, everything will be solved.

Just reluctantly being here because of the young Jaeha’s wish wasn’t enough anymore. Just playing the part of a son might break this family that the young Jaeha had wanted to protect. So he had to become an outstanding and good son who was genuinely kind and friendly like a real son, a son that anyone could see as great.

After that, the demon scoured all kinds of media, books, and the internet, collecting data on what makes a good son. Fortunately, the criteria for a good son were neatly organized on the internet under the term “mom’s friend’s son,” which provided a clear model.

The demon used that data and model to plan how to become a good son. It was a plan that even decided his parents’ retirement after he became an adult. It was truly perfect. With this, the young Jaeha would be satisfied, and the anger would not be directed at Heesu.

The demon was confident, but he didn’t rush. He planned to do one thing at a time, in a way that was appropriate for his age, so as not to startle Jaeha’s mom again.

Above all, to be like a human, more like a human than anyone else.

Meanwhile, after that day, Heesu started stacking up and reading books. It seemed she needed knowledge to somehow comprehend this absurd thing that had happened to her.

Heesu’s quest for knowledge soon spread from novels to manhwa and then to animation. There, an immense and diverse range of fantastical worlds existed—so vast that what Heesu was experiencing now felt like nothing in comparison. By exploring those boundless realms of imagination, Heesu seemed to have somehow come to terms with it all.

Heesu, who grew up based on that, naturally became an otaku. Heesu’s slightly abnormal delusion also started from that time.

***

Jaeha’s family became peaceful.

The woman was relieved as her son seemed to be gradually returning to his old self. The demon stayed by the woman’s side as much as possible, acting as a cute and affectionate son, and always kept in touch wherever he went. The woman, who had become completely stable, no longer obsessed over her son pathologically. She returned to her old self as a kind and good mother.

The woman seemed to feel sorry for what she had done that day and was even nicer to her daughter than before. Her daughter acted as if nothing had happened and smiled at her mother. On the surface, anyone could see that they were a close mother-daughter pair.

But the demon felt that Heesu had closed a layer of her heart after that day. That bothered him a lot, but there was nothing he could do. Even when he tried to care for her in his own way, it only backfired.

Being a good son was rather easy. What was truly difficult was being a good younger brother.

A girl his age was a really complicated and subtle being, and it was extremely difficult to treat her like family. Even after researching and learning how to be a good younger brother, he somehow kept fumbling in front of Heesu. He couldn’t act naturally at all. No matter how much he tried, it would quickly become awkward, and he would often end up getting angry to hide the awkwardness.

‘Can’t you be a little nicer to your sister?’

Whenever he fought with Heesu and was holed up in his room, the young Jaeha would speak up without fail. Even though he was fading, he seemed to be quite worried about his sister.

Every time that happened, the demon would get annoyed and bang his head against the wall.

I want to be nice to her. I want to be nice to her, too. But I can’t. Ugh, this is f*****g awful. Why am I like this, really…….

In the end, the best the demon could do to be nice was to hang around and beat up the people who were bothering Heesu and threaten them. As a result, his embarrassing history of dealing with weak human brats only grew with each passing day.

He thought things would get better with time. But as time went on, the situation became even more f****d up. Because Heesu had her first period.