This was so cute. I love the idea.
Tsuna: Tsuna fainted. When he showed up in the future, it was after they had stopped Byakuran so he figured that it would be pretty routine stuff. When the poof of pink smoke cleared however, he was in Dr. Shamal’s examining room while you were having a routine ultrasound done, holding your hand. Your swollen abdomen was the last thing he saw before waking up back in his present time, facing his worried guardians and refusing to meet your face.
Gokudera: Even before the smoke cleared, Gokudera could hear the yelling. He immediately recognized your voice and wondered what he had done wrong. Upon the smoke clearing, he could only stand frozen, staring at your stomach. He blinked a few times before staring up at your face and than back down at your swollen abdomen. “Is-Is that mine,” he said, all bluster gone, pointing a slightly trembling finger towards your middle. Your glare intensified, “Of course it is, dumbass.” With your scowl directed at him, he took a cautious step back. “I’m sure that my future self is very sorry for whatever he did to cause you distress,” he said, trying to keep you from murdering either now or when his older self returns. “You’d better be, you -“ The poof of pink enveloped him and the rest of your lecture was cut off, while he wasn’t sure if he made it better for himself in the future, he couldn’t find himself to be too worried because hey, better him than me.
Yamamoto: Yamamoto comes back grinning so widely from the future that most of the other guardians are worried that he’s gone mental. He doesn’t tell them, of course, about the sight that greeted him. When he had poofed into the future, he had been immediately tackled by two identical twin boys who were about 4/5. You were a step behind them, trying to grab at least one of them, your stomach just starting to show. The boys on top of him, once realizing that he wasn’t their father, not really, clamored off of him, and retreated to their mother’s side, more cautious than shy, grinning widely at the new comer. “Takashi,” you greeted, the younger version of your husband. “Surprise.” “Maa, maa,” Yamamoto laughed at his family 10 years in the future. “I always knew that I’d spend my life with you.” The last thing he saw before he returned to his current time, was your boys grinning up at you as you blushed prettily.
Ryohei: After the poof of pink smoke alerted you to what happened, you worried for a moment when the younger version of your partner just stared at your stomach, completely silent. “EXTREEEEEEEEEEEEEEME!!!!!!” For a moment, you thought that you had gone deaf as you glared at your partner. The brief feeling of annoyance was gone though, as suddenly as it had come when the teenager picked you up and spun you around, as if you weren’t quite a bit heavier. You were both laughing as you slumped against him as he lowered to the floor. When he came back to the present, he immediately ran to find you, he had to plan to the EXTREME. After all, he only had ten years to convince you to marry him now.
TYL!Lambo: Lambo spends about half the time staring at your tummy before breaking into sobs. While you couldn’t exactly tell if the teenager’s cries were of terror or happiness - honestly with that cow, either was entirely possible. You decided it was the second one when he fell to his knees in front of you and wrapped his arms around you. Your amusement disappeared a moment later when you heard him whispering to the baby inside of you, “You’ll be daddy’s subordinate, won’t you.” Feeling a scorching heat on his head, he gulped as he looked up and was met with a ferocious glare.
Hibari: The other guardians didn’t realize why the older Hibari was so anxious when he appeared - not that anyone beyond the Vongola could tell that it was nerves, anyone else would have just thought that he had become twice as violent as he aged. When their Hibari returned, there was still a faint stain of pink across his pale cheeks and he looked the most shocked any of them had ever seen, they worried about what the future held that could cause the strongest of the Guardians, the aloof Cloud Guardian, the former demon prefect, to become so unsettled. Hibari would never tell them that he had switched with himself at the exact moment his partner was in labor. At your hands, he had experienced a strange mix of amusement and rage. He made up his mind as you struggled through the five minutes of labor that he had spent with you, that you
and most women actually deserved the title of “carnivore” for the pain that you had to go through. He also made up his mind that making you angry would be a very bad plan after the seeing the glare that you leveled at him, and hearing the threat you leveled at Lambo and his ten-year bazooka.
Meanwhile, ten years in the future, Hibari actually ended up apologizing to you, as he let you grip his hand as hard as you need and whispered words of encouragement
which he would deny later.
Mukuro: After spending most of his life after the experiments believing himself to be sterile, seeing your 6 month pregnant abdomen nearly caused Mukuro to break down. Even as a teenager, the look of utter joy that crossed his face upon realizing that he was going to be a father, matched his older self’s expression when he had found out. The fear and doubt of his own abilities that crossed only a second later also matched the older man’s expression. ”You’re already a wonderful father now, Mukuro,” the older version of you said, squeezing the teenager’s hand. “Don’t worry.” Though he tried to cover up his nervousness with one of his laugh’s, he knew that you saw through it. And while he never told the others what he had seen when he had traveled to the future, they all noticed that he was changed a little bit, he became calmer, and maybe, dare they say, less violence. What they didn’t know was that Mukuro swore to himself that in 10 years, he would a man that any child would look up to and be proud of. (And while you didn’t mind his change in personality too much, you didn’t let him do a complete 180 because, c’mon, you did fall in love with that creepy jerk.)
So while Mukuro managed to not end up a jerk, his price for that was that he got a larger one than the rest. And of course, Hibari refused to let that pineapple herbivore get away with that, so he demanded he get a long one as well or else he would bite me to death. True story.