Thanks for your response. Sorry for not updating this for a long while.

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"Naira don't worry, aunty ko kuch nahi hoga am sure she will be fine", spoke Karthik soothing her.

"Karthik agar Mumma ko hospital lete mein ne der kar di toh, Mumma pata nahi kitna waqt se behosh thi, sarri galti meri ha Karthik, mein kyun chali gayi apne kamre mein. Mumma ke saath rehna chaiye tha mujhe.", Naira sobbed continuously blaming herself.

"Shhhh", Karthik hushed her up by putting a finger on her lips.

"Tumhari wajhe se kuch nahi hua, sun rahi ho, tum ne kuch bhi nahi kiya", he said cupping her face and looking eye to eye, trying to make her understand and take away the guilt, he pressed his lips on her forehead, then hugged her tight.

Everyone arrived by then and started questioning Kaira, the two broke the hug and informed them that the doctor hadn't said anything yet.

Waiting for half an hour more the doctor finally came out.

"Doctor who is my wife, usse kya hua hai, app kuch bol kyun nahi rahe hai", questioned Naitik

"Mr. Singhania apki wife ki reports agayi hai, she has blood cancer last stage.", informed the doctors everyone was taken aback.

"Ab apki wife ko sirf ek bone marrow transplant bacha sakta hai", said the doctor

"Haan doctor toh aap mera bone marrow le lijiye", offered Naitik and even everyone else agreed that they were all ready to give anything to save Akshara.

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Shaurya, Varsha, Naitik, Naira, Naksh, Karthik, Karishma, Naman, Gayu, Suvarna, Manish, Kirti, all conducted their test to see whose bone marrow would match Akshara. The test were conducted and Karthik's bone marrow was matched after some other test and procedures the started with the operation. Those hours felt like years, but everyone sighed a relief, when the do announced the operation was successful, but the patient and the donor would have to be at the hospital until they were healed.

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The next morning Singhanias, Maheshwaris and Goenkas are in Akshara's hospital room, Karthik is also there, he was in his ward with Naira sitting by his side but when Naksh gave the news of Akshara coming into consciousness, Karthik requested that he also wanted to come.

"Mrs. Singhania you are absolutely fine now. I must say you have a very lovingly family. At once they were all ready to give the bone marrow, no questions about the procedures or risks.", Akshara smiled

Akshara, saw Karthik in the hospital clothes and realized that he had saved her. She motioned him to come closer and sit by her, Karthik did so.

"You know I have only seen mother giving birth to a child, but first time I saw that a child gave new life to his mother", commented one of the nurses

"Haan bhale hi main ne Karthik ko janam nahi diya, lekin dil se usse apna beta manna hai", responded Akshara with a smile.

"Aap yeh kya keh rahi hai Mrs. Singhania, yeh app hi ka beta hai, reports ka yehi kehna hai", said the doctor.

"Doctor apko kuch galatfemi huyi hai", said Naitik

"I guess I selected "son", option when they asked for relation with the patient so that is why all this confusion", said Karthik.

"No, she is your biological mother and if you have any doubts you  may go to any doctor and conduct any test you like", said the doctor and left, sensing the tense atmosphere.

"Mere kittu ka parivar humesha uske samne hi tha", Karthik's Dadi spoke to herself but as the room was dead silent everyone hears what she said and looked towards her. Suhasini realized it was time to tell everyone the truth.

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Flashback

Suvarna was at Agarwal House, Kirti and Manish's parents were also there. Suvarna's labour pain had started but it was raining really heavily that night, so no ambulance was coming, and the roads seemed so bad that they also could not drive to the hospital in time, so they decided for a home delivery.

Some hours later Suvarna gave birth to a baby girl. Only Suhasini knew this and was about to announce the birth of a laxmi in the house, but just then her husband came and took the baby.

"Ladka hai ya Ladki", asked Mr. Goenka

"Ji, laxmi hai", dadi replied with a smile to her husband.

Without saying anything, dadu took the child and went. Suvarna's mother who had come back after washing her hands asked Dadi where the child was, even Suvarna's father walked in and asked about the baby, but Dadi had no answer. She left the room and went to the main gate and saw her husband back without the child so she questioned him.

"Ek beti phele se hi hai, itni betiyon ki kya zarorat, waise bhi betiyan bojh hi toh hoti hai", he replied shocking his wife.

"Kahan hai woh", Suhasini questioned sternly.

"Chod aya usse bahar", the most senior Goenka replied emotionlessly.

Dadi searched the place, she heard cries and followed them, she saw a baby placed under the tree, she hurried and picked it up, she saw that the baby wasn't the child which Suvarna delivered, she tried looking for any other child but couldn't find any, though it wasn't raining as heavily now but it still was and the child in her arms seemed like a new born, so Suhasini took the baby inside.

Flashback ends

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"Jab mein Karthik ke saath Agarwal House ayi, sabko lagga ke Karthik hi Suvarna ka bacha hai. Mein bhi apne pati ke neech harkaton ke barien mein kuch na keh saki aur chup ho gayi", dadi revealed the truth shocking everyone. There was dead silence again.

"Suhasini ji uss din who bacha apke kaha mila", questioned badi Dadi and Karthik's Dadi replied where she found the child.

"Matlab Naira app logon ko beti hai", this statement by badi Dadi shocks everyone even more.

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Flashback

Everyone in Singhania Sadan had gone to attend a wedding of long time family friend, only Akshara and bhabhima were at home, since it was her last month, though Naitik hadn't wanted to leave, but Akshara convinced him saying there were two weeks more, but looked like the baby was too eager to come and the labour pain started that night itself. Since traveling was not possible because of the heavy rain, even here bhabhima opted for home delivery but it wasn't successful the baby was born still. 
Bhabhima was very sad to see the dead child and wondered how she would tell Akshara when she got up and how would she face the other family members when they get back.
Just then very faint cries were heard, she looked at the child in her arms but he was still but she was sure he heard cries, so she went outside and saw another new born crying badly. She picked up the child considering as a blessing from God and kept the still born child down.

Flashback ends

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"Mujhe lagga tha ke bahu ne ek marre huye bache ko janam diya aur uss bachi ka koyi nahi, mujhe lagga munna aur bahu ko unka bacha milega aur ek bachi ko apne maa baap. Mujhe nahi pata ke mein munna aur bahu ke bete ko unse durr kar diya", spoke bhabhima.

There was another round of silence

"Karthik, kaha hai", questioned Akshara

"Naira nazar nahi arahi hai", Manish asked

Akshara Naitik, Suvarna Manish looked around the room to see Kaira but couldn't find them, they passed a worried look to one another.

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Note : I have no idea about leukemia, bone marrow transplant and all that so that if I have written anything rubbish about the procedures, and have ended up hurting anyone who has gone through or knows someone who has gone through the serious illness, I am really sorry.