I Love You, Monster: The Blindfolded Wife x The Masked Husband Chapter 464 One condition

Red Empire Corporation.
Sei was currently having a meeting with executives when Zaki barged in like a boss, startling everyone except Sei. Every single pair of eyes fell on him and the extremely tensed atmosphere now turned into a stalemate.
Zaki's gaze was directed towards the king sitting coldly at the head of the table. Zaki looked like he was being chased by a demon and made his way here to take refuge under the great monster king, Sei. Of course, this was jus how the executives view the current situation.
"Excuse my intrusion," Zaki said without averting his gaze away from Sei. He then strode towards the quiet man and when he reached him, Zaki's serious look changed. He suddenly looked like a child pleading his father for a favour as he bent towards him.
"C'mon Sei, you know I'm running out of time. I told you to stop being such a worry wart. I'm just going to a certain shop, so tell those damn bodyguards not to restrict me like this. I'm behaving like a good little boy like you told me to. I won't be reckless anymore." Zaki's voice was soft and he really was pleading with Sei right now. This stubborn Zaki who used to simply shrug and sulk in the corner if Sei wouldn't let him do what he wanted was now trying his best to convince him. Somehow, his attitude right now was making Sei feel that he was finally acting like his little brother and it made Sei feel unusually good, maybe because for many years, their roles had been reversed. All these years, the superhuman little brother was the one protecting the big brother, but now that things were falling to its rightful place, the fact that Sei was finally being Zaki's protector right now was making Sei finally learn how it feels to become a big brother. For some reason, he felt really good and somehow, very proud. His cold and stern face a moment ago slowly became soft and blissful that the tensed executives subconsciously hung their mouths open. They couldn't believe their eyes. 'Was there some kind of good news? Could it be that his wife was pregnant? Mr. Chen's expression would only become like this when it came to his beloved wife and son, right?'
The executives began to feel that this meeting, which was heading down to hell a moment ago, would now surely take the path towards the heavens. They all quietly heaved a sigh of relief, looking at Zaki as though he was a superhero who appeared to tame the monster and save them.
Meanwhile, Zaki's brows knotted hard as he looked at Sei. He was anxious and desperate right now and yet, why does it look like Sei was enjoying this? Was he thinking that I am not being sincere enough? Was he thinking I am not being serious?!
Somehow, Zaki's vein was starting to pop but he knew he couldn't get angry or get pissed. He knew that if he lost his calm, this Sei would only restrict him more. He also knew he'd been trolling Sei for too long in the past and this was the first time he pleaded seriously so he might be having a hard time believing it was for real.
Thus, Zaki could only plead more. He breathed deeply and he moved closer to him.
"Sei, I'm really serious! I'm not kidding or trolling this time. Look," he pointed his forefinger towards his own face. "Does this face look like it's fooling around? I need to do this for Hinari so you must let me go. I will be very careful, I promise."
As Zaki said those words, Sei almost couldn't stop himself from smiling widely. Zaki's humbled face looking at him was making him feel even better.
"Okay, I will let you go but in one condition." Sei finally spoke.
"What is it? Tell me. Fast. I will do whatever it is!"
"From now on, call me 'big brother'."
Zaki: ". . . H-huh?!!"