A/n: I hope you like this chapter!

Third POV:

When they finally arrived in the Zarazaki Corporation, they were greeted by guards. Yamato Kento stayed behind Arima Kousei and Miyazono Kaori while Mitsuo walk beside them. The building is truly large and enormous with lots of employees and clients walking to and fro. There were a lot of stores and offices scattered around, too.

Yamato Kento truly felt nervous but happy that the boy whom he is ordered to protect already knows the truth. Kousei is thankful for Kaori and his bodyguard for making them meet each other. When they were finally at the largest room in the building at the tenth floor of Zarazaki Corporation, all four of them saw Arima Takahiko and Zarazaki Yuan sitting near a long, glass table. They both stood up with smiles in their lips.

Yuan is already an old, chubby man wearing a traditional Japanese Kimono while Arima Takahiko is wearing a black coat and tie. "You're my grandson from my second child, am I right?" he asked Mitsuo who's still shocked that his suffering would soon end and his families are already accepting him.

I was right not to get angry to my father. Thank you, Kousei. You may not have helped me directly but you really did help me.

Arima Takahiko looked at them happily and told them to sit near him. When all four of them had already sat beside him, Zarazaki Mitsuo finally asked, "Why have you called us here?"

Yuan laughed at his grandson, "Isn't it obvious? You're now officially a part of the two families. We can't deny the blood that runs down inside you anymore."

Takahiko closed his eyes and folded his own hands, "Forgive me for being a bad father, especially to both of you. You're both my sons and your mothers are all important to me. Will you be able to forgive me?"

Mitsuo and Kousei stood up from their seats to stand behind him and hugged their father.

"You've always took care of me, dad," Kousei told him.

"I forgive you," Mitsuo told him.

Kaori and Kento smiled at each other. They were able to fix an old mistake peacefully. Arima Takahiko asked Yuan, "I want him to bear my surname. Is that okay?"

Zarazaki Yuan nodded, "You're his father. It's only your right to make him an Arima."

"Really, father?" he asked him.

Arima Takahiko held his shoulders tight as if he's in fear of something. Mitsuo quickly sensed his father's hidden emotions. He knew that something seems wrong and he knew it more when he asked Yamato Kento to take Miyazono Kaori and Arima Kousei outside the room. Yamato felt confused until he read his master's silent message coming from his teary eyes. They will have to talk about something more serious. Since Kousei and Kaori were both underage, they have to leave the room.

Kousei asked him after they went to a library for a while, "Why did father made us leave?"

He actually do not know how he'll answer until he noticed that it's his girlfriend who answered his question, "Your brother's already twenty-one years old. They may be talking about something we can't hear about since we're underage."

Kousei sighed. "What could it be, then?"

....

Mitsuo stood up in shock between the two adults after learning that his father chose him as his heir. "I'm... I'm an illegitimate son of yours, father! Shouldn't it be Kousei? Why not him?"

Yuan and Takahiko sighed. His father looked at him and revealed to him, his brother's health condition.

"Kousei is sick. As an heir, you would have to have a lot of strenuous duties and responsibilities before you become the new clan head," he told him. "As I am the new head, I have the right to choose who will be the next head after me. My brother backed away from becoming the head. I have only two sons as of now and the two of you are the only ones legible to become my heir but your brother is sick. He has a Congenital Heart Disease."

Mitsuo's heart almost sank. He couldn't believe that his younger brother does have a very serious sickness.

"Take care of him. As a brother, you know your duties. Now that you have met him, I will need you to always make him happy. I know that my wish is simple. He's Saki's son. I can't lose Saki's son too early," Arima Takahiko told him.

Tears fell down his eyes and he so wanted to rush out of the room but he calmed down himself. He can't be too obvious that he already knows that his brother is sick. He could feel that his brother won't want him to worry for him. "I swear to protect him, father."

Arima Takahiko thanked him with tears falling down his eyes, too. "Thank you, Mitsuo."

When he already got out of the room, he found his brother smiling at him. He could see that his brother is excited to spend time with him. The two adults soon followed and asked them, "So, where do you want to spend time with each other?"

Kousei looked at Mitsuo and suggested, "Is there a music room here?"

Zarazaki Yuan grinned. "Yes, we do have one."

"Can we go there?" he asked them.

Yuan nodded in agreement and when they were finally in the music room, Kousei quickly went in front of the black piano, opened the lid and began touching the keys. The piano began to play out a happy piano that made everyone glad. Mitsuo stared anxiously at his brother. It hurt him a lot to learn that his brother looked strong and healthy but the truth is, his brother's weak and frail. He hid his tears falling down his eyes and wished that his brother wouldn't experience more pain in the future but he knew that fate was the real enemy of all men.

...

A/n: I hoped you like it!!! Don't forget to vote and comment!