A/N: I'm two weeks late but Happy Belated Birthday, Lambo! (Lambo is 21 and Reborn is physically 18)

Had to re upload cause it came out with the html codes and all.

The entire month of May had Giannini in a very cheery mood. The inventor would randomly chuckle to himself or wear a self satisfied expression whenever he hinted at Lambo's birthday present. He would give vague hints, citing that only time will tell or that the lightning guardian was to expect the unexpected. One more than one occasion, he would get super excited and skip away after dropping those hints.

Then came the morning of the 28th and Tsuna was surprised to see a familiar purple canon that once brought him to a place where his future was bleak and full of despair. The lightning guardian was given the honours to test out the new and improved time travelling machine that was originally the product of his birth family. Instead of the usual bubblegum pink smoke, there was a puff of light blue which resulted in a flustered Giannini bouncing a crying baby wearing cow patterned bodysuit. Correction, a screaming baby who also had an afro and the loudest screech the brunet had ever heard.

Lambo.

Giannini's 10-Year Bazooka 2.0 had completely missed the mark and instead of 10 years into the future, it summoned Lambo from 20 years back into the past. In place of his 21 year old younger brother was his 1 year old toddler self throwing one hell of a tantrum. The rest of the table were either staring at the two of them in complete bewilderment or trying their damn hardest to ignore the commotion.

Unsure of what to do, the brunet aimed for chaos control and bravely advanced towards the distressed man and baby and beckoned for the child to come towards him. All at once, the crying stopped and Tsuna found himself staring into bright emerald green eyes framed by wet lashes and surrounded by pink. Tsuna felt his heart swelling up with affection as the child blinked tears away and regarded him with curiosity and wonder.

The Vongola boss tried calling him again, and the baby reached out and made grabby hands, gaze never leaving the the brunet's eyes even when he was comfortably settled in Tsuna's arms. The older man felt a bit uncomfortable and attempted to smile but he was sure it came out slightly awkward, like a grimace. Nevertheless, without missing a beat, baby Lambo had flashed his brightest smile at his older brother, and Tsuna caught sight of pink gums and two tiny front teeth. The one year old's eyes sparkled with glee and he cooed, kicking his legs a little.

He greeted the child, saying his name and also introduced himself and he was pleased when the responses from the toddler only got more enthusiastic. His little giggles were like music to the brunet's ears and Tsuna was captivated by the sable haired cherub in his arms. Everything about the baby was perfect, from his cute little button nose to his chubby little cheeks and his big innocent smiling eyes.

They heard a sneeze and the baby was a bit startled, whipping his head in that direction. Lambo's eyes were wide as saucers and his mouth formed a little 'o' shape. Gokudera had sneezed again and the child's expression morphed into delight, clapping his small pudgy hands together and squealing a little.

Yamamoto promptly deduced that the baby was entertained by the action and tested his theory out by exaggeratedly faking several sneezes much to the annoyance of his silver haired lover. True enough, the little lightning guardian reacted the same way and now wanted to go to the rain guardian. Tsuna had almost dropped the baby when he lunged in that direction. He set the wriggly toddler onto the dining table and the child determinedly crawled towards the laughing man while the other adults scrambled to move the plates out of the child's way. However, the baby boy got distracted when he passed by a young man dressed up in a suit wearing a fedora.

Reborn.

The little guardian ceased his movement and sat on his bum staring up at the hitman in awe. The child crawled towards the hitman but his attention was not on the person but on his fedora where Leon was perched on top. Tsuna quickly went over to Reborn's seat, all prepared to catch the baby once he went over the ledge of the table. He was not the only one because the people beside Reborn, namely Ryohei and Yamamoto were also reaching out their arms.

The strangest thing happened though, just as the transfixed baby was about to fall over, the hitman had firmly scooped him up and made him stand on his lap. Needless to say, a couple of jaws had dropped and Tsuna himself had to pinch his arm just to make sure he was not seeing things. On his wobbly legs, Lambo had stood up and supported himself by grabbing the hitman's suit jacket in his tiny right fist while the other hand extended to touch the little green chameleon. Reborn pried the little kid away to make him sit on the ledge of the table and Tsuna saw a big sulk on Lambo's face and tears filling up his big green eyes at being denied the chance.

The weirder part was when Leon had willingly leapt onto the baby boy's lap which stopped him from almost bawling. The lightning guardian was immediately taken in by the reptile and swung his tubby legs back and forth, giggling and chuckling. The rest of the guardians were smiling fondly at their younger brother, Tsuna included. It made him look forward to starting his own family by welcoming a bundle of joy in the future. Tsuna could have almost sworn he saw a teeny tiny smile grace the hitman's face. He was probably hallucinating because when he blinked, the mask of indifference was back and he mentally shook himself for entertaining the thought of Reborn being anywhere near affectionate towards the child he often called a 'snotty nosed brat'.

One thing Giannini had added to the canon was a little bell that dinged once the five minutes were up. When that happened, the baby was enveloped with the same puff of blue smoke and the lightning guardian of their timeline returned. There was a brief moment of eye contact between the self proclaimed rival of the Strongest Hitman Alive with Reborn himself and the reaction was instantaneous. Lambo's cheeks were dusted with pink and his eyes grew almost as wide as his mouth.

The brunet could not blame him, with his long legs suspended out on either side of the hitman's lap and the proximity of their faces only a few inches away, it was almost a compromising position save for the guardian's butt precariously balanced on the dining table's edge. When he recovered himself, he sputtered out an apology and desperately looked for ways to escape without messing up the plates loaded with food and the mugs of coffee around him. The only way was to move forwards onto the tutor who was now deliberately ignoring the 21 year old in front of him and staring straight ahead. Leon too, had gone back to his owner and if chameleons could laugh at other people's expense, Tsuna guessed the reptiles would be sporting the same look as the hitman's pet.

Leon was not the only one, the rest of the table had taken to either snickering, suppressing a smile or openly laughing out loud like the Vongola sun guardian. Poor Lambo was obviously embarrassed by it all and his faced turned even redder, much to the amusement of the people around him.

Tsuna felt slightly sorry for his younger brother but instead of helping him, he fished out his smartphone to capture the hilarious scene before him. Go big or go home, he thought as he pressed record to take advantage of the momentary distraction. He barely got a seconds in before he saw his tutor cocking a gun in his direction through the lens of his camera.

Oops.

The brunet gulped, and ceased his filming and brought his hands up to surrender. His eyes darted from his pouting younger brother to the hitman staring daggers at him. There was a voice in his head, which oddly sounded like Haru, giving an opinion of how the two looked so matched for each other. It was a conversation which occurred just two months prior in which Kyoko and Haru had pointed out that the most good looking couple could potentially consist of the pretty boy lightning guardian and the charmingly handsome hitman.

Tsuna had brushed it off as them being high on cake, but now, he could see where they were coming from. Curse his fiancée and her best friend for planting ideas in his head because he was actually contemplating it. On the other hand, the thought leaving his innocent younger brother in the hands of the devil incarnate himself was too much for his brain to accept and it did the next best thing to prevent itself from exploding.

And that was to short circuit and leave him unconscious on the ground.

A/N: I just wanted Tsuna and the guardians (and Reborn) to fall in love with baby Lambo and this happened. I don't know about you guys but I hope Lambo slipped and fell onto Reborn's lap. Let your imagination run wild guys teehee.