All Chapters of The Don’s Biggest Regret: Chapter 1 - Chapter 9

9 Chapters

Chapter 1

"Miss Isabelle, these are the casino accounts for this month. Don Rossi said you have to finish reviewing them tonight."Sofia smugly tossed a thick stack of ledgers onto my desk.Without looking up, I said, "Leave them there."However, she didn't leave. Instead, she took two steps closer, and a familiar scent drifted toward me.It was Antonio's favorite cedarwood cologne, one I had given to him."Oh, right. Don Rossi said he's taking me to tonight's negotiation. Since nobody is waiting for you at home anyway, once you get back to the estate, wash the carpets by hand."The red wine you splashed during your last tantrum is still there. Don Rossi said it annoys him every time he sees it."Unlike before, I didn't glare at her coldly and simply nodded."Okay."She was clearly satisfied with my obedient response and let out a disdainful snort."So you've finally learned. And don't forget, even though you used to be the Costa family's principessa, you're still a long way from becom

Chapter 2

Hearing footsteps from the doorway, I looked up and saw Antonio walking past.He had changed into a different suit, and his tie was the dark red color Sofia liked best.As he passed ‌my desk, he glanced briefly at me. The arm around Sofia's waist tightened, pulling her closer against him.It had been a long time since he had shown me such intimacy.I knew he was doing it on purpose.A few days ago, I discovered the flirtatious messages Sofia had been sending him and confronted him about it.He flew into a rage and threw his phone."Do I need your permission just to talk to a female subordinate? Isabelle, a qualified donna doesn't question her husband!"Later, I was injured during a negotiation I handled on his behalf and suffered from a high fever that wouldn't go away, leaving my entire body aching.Yet during that time, he gave me the cold shoulder and took Sofia on a trip.Five years of love burned away completely during that fever I endured alone. At last, I saw things cl

Chapter 3

I hung up the call and didn't look at him."I was just talking to a friend."He stared at me suspiciously, then noticed the agreement in my hand and instinctively reached for it.Just as I was thinking about how to brush him off, his phone rang."Don Rossi, doesn't this spaghetti-strap dress look a lot like the color of your eyes?" A sweet voice message from Sofia came through.His expression immediately softened, and he sent a voice message back."It looks beautiful. Wear that one tomorrow."I couldn't be bothered listening to them flirt, so I got out of bed with the agreement in hand.He stopped me, sounding somewhat displeased."I came back tonight specifically to spend time with you. Where are you going?"I answered casually, "The study. I still have some work to finish."His expression darkened further as he began lecturing me."What's up with your efficiency lately? I've told you to get some rest and stop bringing family business home. Is your principessa syndrome act

Chapter 4

Sofia immediately sat up straight, pretending to be startled, and deliberately adjusted the strap that had slipped from her shoulder."Miss Isabelle? What are you doing here?"A flash of panic crossed Antonio's face. He sat upright, straightened his suit, and then glared at me."Who gave you permission to come in?"I've said it before. Without my permission, nobody is allowed to enter the study!""Marco said he had a document he needed me to deliver to you," I replied calmly.He was the one who had sent me here. Yet now he was angry because I had come.I truly couldn't understand him.Antonio let out a cold laugh and pressed the intercom.Less than a minute later, Marco hurried into the room."Did you tell her I wanted to see her?" Antonio asked coldly.Marco glanced at Sofia, who was subtly signaling to him, and sweat immediately appeared on his forehead."I... I only told her that you were in the study.""Ha."As though he had caught me doing something wrong, Antonio tu

Chapter 5

Antonio looked as though he had just heard the most ridiculous joke in the world.He snatched the agreement from my hand and threw it onto the desk."Isabelle, how many more times are you going to play this game?"I already agreed to marry you and gave you my promise. What more do you want?"Sofia's eyes lit up, and a triumphant smile appeared on her face."Don Rossi, Miss Isabelle has gone too far. You should throw her out of the family so she learns her lesson!""Leave."Antonio cut her off coldly.The rest of Sofia's words caught in her throat. She looked at Antonio in disbelief, and only after realizing he wasn't even looking at her did she leave unwillingly.Before walking out, she shot me a vicious glare.The door closed behind her.Antonio rubbed his forehead, and his tone softened, carrying a trace of helplessness."Alright, there’s no one else here now. Stop throwing a tantrum, okay?"Looking at his confident expression, I only found him ridiculous and pathetic.

Chapter 6

I tilted my head and looked at him.There wasn't the slightest ripple in my heart. If anything, I wanted to laugh."Antonio, are you trying to imprison me?""This isn't imprisonment."His voice was tense."It's protection. The outside world is dangerous. The Costa family doesn't want you anymore. If you leave, you'll die."Suddenly, the roar of engines echoed from below.A loud crash followed as the estate gates were forcibly rammed open.Antonio's expression changed instantly, and he rushed to the window.Down below, a convoy of black armored vehicles rolled into the estate grounds, silver griffin flags of the Costa family flying from the front.The vehicles came to a stop, and the doors opened.The first person to step out was my mother, the Costa family’s donna.She was dressed in a tailored black suit, a silver fox stole draped over her shoulders, her cold gaze sweeping across the estate.Then my father, my two uncles, and the family's most elite guard unit stepped out

Chapter 7

I immediately moved to hang up."Isabelle, wait!" he said urgently. "Just a few minutes. Please.""There's nothing left to talk about.""Just five minutes! I promise that once I'm done, you can hang up whenever you want."I turned off my camera and left only the audio connected."Talk.""Please forgive me."He looked exhausted. Fatigue had now replaced the sharp, confident look that had once filled his eyes."To be honest, you're too proud, too brilliant. Sometimes, you even outshone me."I only wanted you to learn restraint and how to be a low-profile donna. I admit my methods were wrong, but I never intended to hurt you."As for Sofia and me, we were... closer than we should have been. But I swear, nothing ever crossed the line between us."His voice lowered, carrying a weary sincerity."Give me one more chance, alright? I promise that this time, I'll love you the right way."I prepared a surprise for you."The camera shifted, and a church decorated with blue roses appe

Chapter 8

Antonio's face flushed red instantly."Yes…” he forced out through clenched teeth."As long as it will calm your anger, as long as it will bring you back, I'll agree to any condition."I almost laughed."What makes you think you're still in a position to negotiate with me?"With whatever little remaining business you have? Sofia took your smuggling routes. "So you're not here to discuss a merger. You're here begging for a way to survive."You're hoping to use what's left of your pitiful little empire to get the Costa family to stabilize your situation and maybe even help you reclaim everything you've lost."With every sentence, his face grew paler."Am I right, Antonio?"He clearly hadn't expected me to know so much.However, the Costa family's intelligence network could uncover anything.After he brought Sofia back, she tried to prove her abilities by taking over negotiations for the smuggling routes herself.As expected, she lost everything.To recover those two core r

Chapter 9

"Anything you want!"Antonio answered immediately, his face full of hope."Go on. I'll definitely do it for you…""Sofia." I cut him off."She betrayed your smuggling routes and caused you massive losses. By family rules, she should pay the price."If you can't even deal with trash like that, how am I supposed to believe your sincerity?"He was still kneeling on the floor, but the hand holding the gun began to tremble."Isabelle, she just… wanted to prove herself too much.""Yes, she made mistakes, but that doesn't warrant death. I'll punish her. I'll expel her from the family and make sure she never returns. Is that enough?"I let out a soft laugh.Of course, it wasn't enough.I walked closer to him and lowered my voice."Antonio, do you know she deliberately spilled coffee on my laptop, ruined my dress right before negotiations, and even moved into my room without my permission?"Shh, don't act so surprised. You knew."Then why was she allowed to do all that?" I asked m

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