Not only because of the knowledge he gained from the professors he gained in the past, he also gained the knowledge from the skilled workers and professionals in this area when he got their DNA. Moreover, when he was in the world of "Kimetsu no Yaiba," he also met famous 20th-century scientists such as Einstein, Tesla, James D. Watson, and many others, increasing his talents on various other things.
Still, Isao had to say that it was too cruel to compare Tanjiro with Takashi since, unlike Takashi, who could only whine and run away, Tanjiro worked hard to help everyone. Even if he might lose his life in the process, he would do it as long as he could save people.
I know how it feels to not be wanted. How it feels to be brought into the world by someone who did not want to bring you into the world. How lonely and desolate it feels, the feeling that you are not a person or a child of your parents but simply their mistake they couldn't get rid of quickly enough.
Pushing him onto the ground, Kiriko became a female cowboy. Unlike her daughter, she was a veteran and could ride a wild stallion like him skillfully. Yet Isao wasn't someone who could be tamed. He was a wild horse that lived freely on the beautiful steppe.
If he were going to fight someone, he'd rather get up close and personal and bash the poor bastard's head in with these hands... or weapon for that matter.
Living as a Lord in another World is unsurprisingly easy!
Appearing back in the room, Kazutora looked at his red cheeks in the mirror. A frown appeared on his face and rubbing his head, Kazutora thought, 'That was dangerous! It was like she was staring at me as prey! Hmm, As expected of Aunt Snake's disciple.'