A/n: This book is also available in Wattpad. I hope you like my fanfiction! Thank you!

Disclaimer: Your Lie In April isn't mine. Only my original characters are my own! Thank you so much! :) :)

"Dad, where am I?" Kousei asked after he opened his eyes that night.

Takahiko stepped closer to his son. "You're in the hospital, Kousei. You were admitted here early in the morning after you had seizures."

Kousei began crying painfully.He hates hospitals after he'd seen two people close to him who died in the hospital."Why should I be here, dad? I don't want to be here!"

At the time he felt that there is a needle of the IV fluid at the back of his right hand, he took it off and tried to leave his room even if he's feeling so horrible. He wasn't able to go away, though as he collapsed on the floor. "I need a nurse out here!" Takahiko screamed out while Kousei was weeping so much on the floor. "I need help!"

The nurses stationed near them immediately helped him get his son back on his bed to get him to rest. As soon as they got there, the nurses placed the needle of his IV fluid back on him after they laid him on his hospital bed.

"Son, calm down. Your doctors still doesn't exactly know what you are sick with but you need to stay here. Understood?" Takahiko scolded him after Kousei laid on the bed.

He looked away from his father since he is still filled with too much disappointment."You know what I would want. I want to go back home. I don't want to be here."

The next day, Seto Hiroko and his husband came to visit him while his doctors were busy diagnosing him. They were the ones who looked after him for a while since his father needed to get some important things in their home to bring in the hospital.

Kousei was having his CT Scans at that time.After he was done, he's quickly sent back to his room in the hospital where he immediately felt he wanted to lay back down on his bed. He had already accepted that his stay in the hospital's very important when he had another round of painful seizures three days after he was admitted in the hospital.

His doctors quickly gave him anti- seizure medicine to stop his seizures that night. The CT Scan did find a tumor on his head but the doctors couldn't exactly know how large it is and so, the next day, when he felt a bit better, he had his MRI and other tests.After a few minutes, his doctor, Nicole, came with her team while Kousei was given medicines to relieve him from his muscle pains.

"Hi," she smiled at Kousei. "Mr. Kousei Arima, I am Dr. Nicole Janice. You can keep calling me Dr. Nicole."

Kousei can't even look at her. "Hi."

"Can you tell me what you had felt for a few days?" she asked him. "Anything you have felt? How were you these past few days?"

Kousei was about to answer her when Takahiko just arrived as well that time. He didn't want him to hear it since he knew that his father would be angry but since it was about his health, he had no choice but to say it. "I've been fainting at school. I don't know how many times already," he answered her. "I never bothered going to the hospital to get checked up since I always feel okay after I wake up. It's all before I go to the piano tutorials, lunch and before my practice with the conductor who teaches me how to play piano along with the Orchestra."

"Son, why didn't you tell me?" Takahiko asked him. "You should have told me!"

"I became a huge star and so, I never really thought of telling you about my fainting spells," Kousei answered him. "I experienced many migraines, dad! I'm sorry."

After Dr. Nicole had written all of the symptoms he had experienced, he thanked Takahiko and gave them privacy.

When they all went back to the laboratory to look at the CT Scans, she sighed pitifully after she saw that he did have a five-centimeter tumor in his cerebellum that makes his weird head aches, arm weakness, leg weakness, changes in hearing and vision come up after a week of tests.

She also learned that Kousei had already went to many optometrists after she asked him again that day. She learned that he had consulted too many of them to correct his vision changes secretly, but none had helped him. He wasn't able to hide what's going on with him when he fainted on their carpet on the floor where he broke a very thick eyeglass.

His nurses will always find him asking to give him more pain relievers when he can't even sleep because of how horrible he feels. His head was giving him too much pain when he tries to go to sleep.

Luckily, Seto Hiroko and his father had always been with him in those painful times. It had also been out in the public that he's being treated in Manhattan Medical Center. Since there's no definitive disease yet, the reporters who go at his hospital always get home without any information yet. Most of all, the doctors do follow medical secrecy law by heart.

That Friday, Kousei was wide awake when Doctor Nicole went inside his room. He gave him a calming medicine before he tells her anything since she found out that he's alone. She also found him playing a toy piano in which Seto Hiroko gave to him to relieve his separation anxiety from his piano.

"Heard you're a very famous pianist in your country. You became more famous and successful when you were invited to study in Juilliard School," she told him. "How are you?"

He stopped pressing the keys and looked at his doctor. "I'm a bit fine, doctor."

"Why do you hate hospitals, though?" she asked. "Want to share it with me?"

"That's personal," he replied back. "More on, what I want to know is why you're here, doctor?"

"We already finished all of the tests and diagnosed what makes you sick," she told him. "Should I wait for your father?"

Since he's given a calming medicine, it prevented him from showing any violent, emotional response that usually happens to him when he talks to his father.

"You can just tell me, doctor," he told her. "Thank you for everything that you have done for me for this past few days."

"You have a brain tumor. We believe that the tumor developed as you grow, it also grew until it gave your eye problem worse. You had a slight hearing loss, muscle weakness, difficulty walking, head aches and seizures. You also faint a lot," she reported to him. "We heard from your father that you had a history of not hearing your own playing before and you only believed that it's all a cause of your old PTSD."

Kousei began crying after he sat up on his bed to look at her more. "What happens now?"

"You would need to take a surgery. More specifically, a biopsy. It'll be better if I say them in front of your father. For now, we'll be administering more pain relievers and other medicines to give to you," she told him. "I'm sure you would need them to help you sleep."

"He does have a brain tumor?" Takahiko was so surprised when he was shown his son's MRI and CT Scans inside Doctor Nicole's office. "Are you sure, doctor?"

"Yes we do, sir. We have to make you sign the consent before we are allowed to get your son sent at the OR for a surgical biopsy," Doctor Fred Hernandez, a Latin American told him. He's an oncologist. "Unfortunately, your son's suffering from that huge mass of tissue that's formed by an accumulation of abnormal cells."

Doctor Nicole is also there. "It's needed since we have to know if it's benign or malignant."

Takahiko quickly took the consent paper and signed it up. "Just make sure that my son will be able to keep playing his piano. I don't want him getting worse. He does have a very bright future. I don't want that sickness to ruin him more."

After that, the two doctors took back the Consent Paper and sent it the Hospital's Administration. The Admins quickly gave a thumbs up. The Manhattan Medical Center sent a fellow Japanese to the Arima Family to make sure that Kousei would trust his neurosurgeon.

Doctor Fuji Daisuke was the one assigned to do his surgery. He talked to them in their own language even if there were American nurses and physicians inside his room, too, so that Kousei would feel at home. He needed to do it so that Kousei would understand his condition better. After they talked about what can happen to Kousei after the surgery, he explained to them that his father is positive he wanted his son to take it and the patient would also want to do it.

The tumor in Kousei's brain is luckily far from the language center or even risk losing his ability to play the piano but unluckily, the one thing they are looking at is at the lower part of his brain. He had explained to them that for them to learn what kind of tumor that's stuck on Kousei's brain, they need to do a biopsy. His father and Kousei understood him.

"Thank you for everything, doctor," Takahiko told him. "I want my son to feel better, soon."

"Sir, this is only the beginning of a long journey," he told him. "Your son would still have to drink pills."

The same day, Kousei was prepped to go at the Operating Room to have the surgeons do their job.

A/n: Too... Too hard to make!!! I promise you, this story would really test my writing skills. I hope I will be able to make a good medical story this time around. I just realized Research is a god in making stories like this if you're not a doctor.

Thank you for reminding me that I really have to research on it.

Technical Terms:

Oncologist- a medical practitioner qualified to diagnose and treat tumors.

Neurosurgeon- is a medical specialist who treats diseases and conditions affecting the nervous system, which includes the brain, the spine and spinal cord, and the peripheral nerves. Neurosurgeons provide non-operative and surgical treatment to patients of all ages

Neurologist- treats disorders that affect the brain, spinal cord, and nerves.

*Manhattan Medical Center is a fictional hospital that is only real in my imagination.