AN: This is my first ff on this account for this fandom. My friends were pestering me to post this, so I did. Anyways, enjoy! : D

Remember, reviews, favs and follows are all welcome! : D

-Set after the Future Arc-

The House of Sawada was having a normal, busy Sunday late morning when the doorbell rang three times. Tsuna gratefully chose that opportunity to escape from the task Reborn had set him: babysitting Lambo and I-pin.

Tsuna had never liked babysitting— he would always end up being terrorized by them. Opening the front door and peeking out from behind timidly, Tsuna saw a tall girl with brown hair streaked with what looked like little rainbow colours. She wore a white tank top with a rainbow going diagonally across and a pair of frayed black shorts.

"Wh-who are you?" Tsuna stammered. The girl smiled at his shyness and said, "My name is Alexandria Colori del Mondo." "Tsuna! Why are you taking so looooong!" A little kid with big poufy black hair wearing a cow suit skipped down the hallway to the front door. "Eh? Who is she? Did she come here to be Lambo-san's new slave? Bwahahahahaha!" The cow said madly, cackling away.

"Lambo! Don't bother Tsuna!" Another infant appeared, this time a girl with a pigtail standing straight up on top of her almost bald egghead, wearing a traditional Chinese outfit. Another infant this time dressed in a black tuxedo with an orange dress shirt underneath, topped with a fedora hat which on the rim sat a green chameleon with bulging eyes walked in and said, "Dame-Tsuna, why are you taking so long?"

Alexandria's smile slowly faded away as she felt slightly amused at these three infants and also because her face was starting to ache. "Eh…This is Alexandria…" Tsuna began. "What are you doing here?" Reborn interjected rudely. "Re-Reborn! Don't be so rude…" Tsuna exclaimed. "I can do whatever I like Tsuna." Reborn said, walking forwards to stand at the frame of the door.

He stared right into Alexandria's maroon eyes and Alexandria stared back, holding his gaze with a querying look. "Hm…Who are you?" Reborn asked. "I'm Alexandria Colori del Mondo." Alexandria repeated. Reborn's composure shattered for a split second as shock came to his face. "Colori…del…Mondo…" He murmured.

"Yes…that is my name….do you mind if I come in?" Alexandria asked, getting impatient. "On one condition. You tell us everything I ask." Reborn negotiated. "Deal." Alexandria said, seeing no harm in doing so.

Once Alexandria was in Tsuna's room with Reborn and Tsuna, all three sitting around the square table Tsuna had in the middle of his room, Reborn started off by asking, "What is your position in this world?"

"World? Why would you ask that sort of question, Reborn?" Tsuna asked incredulously. "Shut up and just listen, Dame-Tsuna." Reborn said, smacking Tsuna in the face with Leon in mallet form, causing Tsuna to fall backwards. Rubbing his face, Tsuna regained his sitting position and muttered something about Reborn being too rough.

"I am the Guardian of the Trinesitte, Alexandria Colori del Mondo. My last name means Colours of the World. It sort of relates to my job, guarding the Trinisette which has the colours of the rainbow and together, they are the world, so yeah…." Alexandria trailed off, letting it settle in. Usually people would cope with this information with extreme reactions. Some try to take advantage of her and her position, and some would deny her words and say that she was lying, saying that she could not be and there was no such thing.

"HIEEEEEEEE!? GUARDIAN OF TH-THE…TR-TRINISETTE!?" Tsuna fell backwards again, but this time in shock. Alexandria looked weirdly at Tsuna and his reaction. This was definitely a first. Reborn's face showed nothing, but Alexandria was sure that he was shocked before. Anyone would be if the Guardian of the Trinisette showed up at their door.

"And what would someone like you be doing here? And where did you come from?" Reborn continued on. "I'll just start from the beginning. When I came to this world…well, as soon as I started to remember, I already knew of my duties and this world. I knew what I was supposed to do, what I was to be involved with. I just somehow knew everything I needed to know, like my last name: Colori del Mondo. And then, I just decided to visit the Vongola 10th Boss and his family, because you are a holder of one third of the Trinisette and I thought I should just check up on you." Alexandria explained. "Also, I was wondering if I could stay here for the time being…" Alexandria hinted and smiled.

"Hm…you'll have to ask Nana about that. Other than that, you may proceed on to do whatever you want." Reborn said. "Thank you!" Alexandria grinned and got up. "Now, where might I find Nana?"

After asking Tsuna's mother on whether she was allowed to stay (in which Tsuna's mother just smiled and nodded, saying that any friend of Tsuna's is welcome here), Alexandria went back up to Tsuna's room. She paced dead silent on the wooden floors of Tsuna's hallway to his bedroom, just in case Reborn and him were talking about something.

"We can tru—" Reborn stopped, hearing Alexandria right at the corner of the bedroom door. Alexandria noticed the sudden silence and spun into the room. "Hm. You're better than I expected." Reborn commented. "Thank you." Alexandria said in a rather annoyed tone. People always seemed to underestimate her. Just because she had rainbow stuff on her and a sweet smile did not mean that she could not do anything. But then, at times, this was useful as well, for example: in battle.

"What were you discussing?" Alexandria asked. "You." Reborn answered bluntly. There was no reason to lie to Alexandria, for her position also demanded respect and power as both Tsuna and him held a part of the Trinisette each.

Alexandria nodded and said, "So I have asked Tsuna's mum whether I could stay and she said yes…I was just wondering where is my room?" "Eh…if you exit my room and head down the hallway by going left, there should be an extra room on the right hand side of the place." Tsuna directed. "Thank you!" Alexandria said again and walked out of the room to where Tsuna had said to be was her room.

She sighed as she heard Reborn start talking again.