Baby Stone.

Chapter one: Parents in the stone world.

(SPOILERS for people that are not caught up in chapter 99 in manga)

Tsukasa had been successfully cryogenized or whatever that rare word is said of the many that Senku has said. Kohaku knew that was a difficult thing for him to do, but she was certain that he would cope as he had always, and so she told anyone who doubted it.

Even in spite of everything, she knew that Senku was much more affected than what he shows for, you know, having to murder his friend with his very own hands, even though he has no doubt in his mind that he would manage to save him, it still affected him that things had to be this way. Knowing this, when Gen approached to propose a party that would relax Senku's mood a little before going ahead with the plan that he had for the marine expedition or whatever, she completely agreed and managed to convince her father to give them a large amount of Sake for this purpose.

That was her first big mistake. The second big mistake was letting Gen talk her into entering a drinking contest with the idiot Magma, and the third big mistake is that she had no idea how it happened, but here she was now morning after the party, staring right at Senku's face, both looking horrified completely naked sharing a bed.

"Well…" Being the first to come out of the shock, Senku looked away with hunched shoulders, looking completely miserable. "It is ten billion percent sure that I will never drink again." he sighed long.

Furious, Kohaku didn't think twice and slammed her palm against Senku's cheek, sending him face to the ground behind his futon with his legs up. She didn't punch him just for fear of killing him, he was so weak that he would probably die with just one of her punches, and she couldn't risk humanity's hope no matter how angry she was.

"How can you say that after what you did to me?! Now I will never marry because of you, I will be forever disowned!" Not to mention that her sister Ruri would be very disappointed in her and her newly repaired relationship with her father might get worse than ever. "Now I'm ten billion percent sure you were never a gentleman! You are scum of the lowest and without any honor!" She hugged the sheets to her chest and stood just to point with anger. "I will never forgive you!"

Snarling, Senku rose from the ground with the mark of the slap embossed red hot on his face, and other than that his cheek also looked slightly swollen.

"There is no reason for you to be upset, lioness." He sat cross-legged without caring about his nakedness. "When we bring civilization back, those primitive values will be lost and there will always be a suitor willing to tame you without caring about your past. You don't need to kill me to regain your lost honor." He rolled his eyes.

"That!.." She opened her mouth to reply, but in reality she had nothing to say. Didn't people who lived before petrification really cared about traditions? If so, then she really had nothing to claim, it's not like she has no chance to get married when she wants to. But she was still furious anyway! "That doesn't mean I'm forgiving you so easily." She crossed her arms.

"Sorry, ok? If it were scientifically possible to go back to the past and correct the mistake then I would, but it is impossible, so we just have to live with it." He shrugged, but then put his hand on his chin. "Well, it is not really completely impossible, there is a lot of debate in the scientific community regarding this topic. But in this stone world it is technically impossible so I won't bother thinking about it too much." Kohaku looked at him with a blank face, not understanding a word he just said. "Whatever, I already told you I'm sorry." He started picking his clothes. "Now, if you'll excuse me, I'll go see if anyone wants to help me invent a hangover medicine, although according to my father the best medicine is a glass of lemon water.." He murmured after dressing as he left.

Well, the best thing was to pretend nothing had happened. A part of her wanted to find Gen and beat him up worse than Magna gave him so many months ago, but she didn't want to risk anyone knowing if they didn't realize she slept with Senku, so she would just go on with her life trying to forget that this happened. Easy isn't it?

No. Not easy at all.

After Ryusui and Francois were depetrified a few weeks later, Kohaku began to feel really bad. Like never before.

This was weird. She never got sick. Mauve she had been infected with the same disease that attacked Ruri for so many years? Not that she had a cough or anything, but she was too panicked and didn't think correctly, so she went to the only person she trusted to tell her what the hell is wrong with her: Senku.

So far they maintained their normal relationship, she sometimes felt uncomfortable and avoided being alone with him, but nothing changed between them, so she saw no problem breaking into the laboratory while studying the plans for the new ship which he planned to go around the world.

"Senku!" She called him hysterical. He turned to see her with a raised eyebrow. "This is terrible! I think I got sick! You will have to do another one of your antibiotics or whatever they are called!" she waved her arms frantically.

She needed to be strong and healthy, she was part of the force team. She couldn't get sick now!

"Quiet, it depends on the type of illness you have, maybe it's just a cold and you need to rest" He sighed, leaving the plans on the table. "Let's see, tell me your symptoms."

"Well, lately I have been very tired and dizzy…. And I never felt like this!" He nodded while taking notes on some paper. "And I also have pains in my stomach and breast." She squeezed them without any embarrassment to make her point, to which Senku only nodded, still writing without even looking at her. "And yesterday and today in the morning I was throwing up every time I ate, and for some reason I want to urinate every five minutes! That that I have can you cure it?"

"Before saying that I can cure it, I must be sure of what it is. I am not a doctor, I am a scientist, but I have studied about it and several things come to mind." He narrowed his eyes. "First we must discard the possibility that you are pregnant. You had your period right?" He looked at her with complete calm.

Kohaku froze.

She did not have monthly periods like the rest of the girls, hers came every two or three months and some elderly women told her that this means that perhaps she could never have children of her own. But now that she thought about it, her period had already taken more than four months to arrive, and it never took that long! It should have arrived a month or two ago, following what was normal for her, but if it didn't arrive, that meant that…

She was placed, feeling sweat begin to drip all over her face.

"No…" She whispered in response to the scientist's question.

His calm disappeared.

"What do you mean no?" He rose to take her by the shoulders and shake her lightly. "It's been over three months, if you didn't have your period why didn't you come to that conclusion earlier?" He looked even paler than she did.

"My periods are not like other girls, they come very two or three months, but it never took so long…" Both were visibly sweating at this point.

"W-do you mean that.." He began to smile in a way that was too big and shaky to be considered more than pure nerves and horror.

"We are going to be p-parents.."

"In this stone world?!"

They both fell to the floor.

Translator Note: It is such an honor to be translating this fic! You are in for a rollercoaster for sure!

Author Note: Thanks to Fangirlart5 to translate my fic! There are a translation of another author but I loss contact with her so for now this is the oficial translation! Thanks for read!