"Shut up? Sure."
Kirishima stopped in front of Muzan, the pressure of his height making Muzan instinctively step back.
Kirishima wore the sort of "friendly" smile that made Muzan's skin crawl, yet his gaze was cold as a blade as he smiled down at the contents of those little notebooks.
Seeing this, he had to get a few complaints off his chest.
Muzan did not understand the slightest thing about chemistry. Everything written here was a complete mess.
The undying old bastard had lived so long, yet he could not even write legibly.
"Let me guess. These are all records of your struggles on the road to perfection?"
"You spent a thousand years and killed countless people, and all you produced was this little pile of incoherent bullshit, complete with misspellings?"
He sneered and pointed at the bluish-green liquid in a jar. "This stuff is a spider lily? Or did your eyes get blasted by a cannon? This doesn't look like any kind of flower extract to me."
"Or is that pig brain of yours trying to learn chemistry?"
Muzan shook all over with rage, grinding his back teeth to pieces, yet for a moment he could not find the words to argue back.
In a thousand years, no one had ever dared to humiliate his intelligence and his "great undertaking" so openly!
"Oh, right."
As though something had suddenly occurred to him, Kirishima slapped his forehead. His smile grew even brighter, exposing his stark white teeth. "I heard you became the Fujiwara family's son so you could play around with chemistry?"
"That happened, didn't it?"
"You lived off them for so long, and they were even going to leave you their estate, but the first thing you did was slaughter their entire family, young and old?"
"Tsk, tsk, tsk..."