If he stole the book needed to reincarnate people, why does he expect to find his sister in goblin nests when she wasnt reincarnated yet (no numbers written)?
Well this was a ride in only 50 pages. I’m intrigued, but the shounen tag makes me a tad bit worried, especially when combined with isekai and “edgy” openers like this one. Let’s all hope it turns out to actually be good in the long-run !