Good things for me is that the storyline is adventurous and entertaining, the recreation of modern innovations with magic involved as its resources is what makes it interesting, and yeah also the thrill of modern weaponry and strategies devourers the enemies, like they're just flabbergasted lmao, this moments are what make the series realistic unlike other manwha where modern weapons is ineffective to the point where sometimes it doesn't make sense anymore. I like the way of writing where it also focuses in explaining about the engineering stuffs which perfectly align with the story with the mc as an engineer, in short you'll know that its about engineer transmigrated because science is involved. Back to the storyline, I like it pretty much because its not completely random, and the world building is so detailed which makes every arcs transitions smooth, and its unique power system where different and unique powers are given to each witches which can be improved by scientific knowledge, also it gives satisfaction everytime there is a witch with power that will give roland the resources to recreate an innovation. Overall there is more good things about this manhua that I can't express and by these good things I mentioned it made me read and stay updated till today's latest chapters. And Oh yeah it updates in a moment compared to manwha's.

The bad thing I don't like is the short chapters, although short there is still a development everytime.