While I wait for your replies on WHO DO YOU WANT TSUNA TO MEET NEXT/WHAT DO YOU WANT TO HAPPEN (unfortunately, I have not read the manga, so I'm not very familiar with Enma and his guardians) here's a kind-of omake on how the café began!
Reborn, Colonello, Viper, Skull, Fon, Verde, Yuni, Lal Mirch.
Café Munio: How It All Began
The Strongest Seven were living together in the same old house, and relationships were strained. It didn't take an experienced person to notice the tension in the worn house, and all its inhabitants generally avoided each other at all costs.
Viper was meditating in her room, floating in the air. It was a daily practice of hers, since meditating helped her settle into the real world and calm her thoughts. Being such a strong Mist user had its effects on a person, and if there was one thing Viper was afraid of, it was losing her grip on reality.
Someone knocked on the door. "It's dinnertime, isn't it?" she called out, and she took the silence as a yes.
This was how it worked in the Arcobaleno household. It was an unspoken rule that you did not disturb any other with loud noise. They didn't need words to understand what to do.
Being highly observant individuals, they knew practically everything that went on, what would happen, and always knew how to react.
Or at least they thought so.
Fon had cooked dinner. He and surprisingly, Verde, could cook very well. Other than training in martial arts, the Storm Arcobaleno had taken up the hobby of cooking as well. His area of expertise wasn't limited to Chinese cuisine—by now, he would be considered an international chef and knew recipes from every country on Earth.
The other Arcobalenos mostly welcomed the different meals, but they were less appreciative when Fon tried to serve them fried cow brain sandwiches or yak penis.
But they couldn't deny that the Chinese martial artist was a very good cook.
Today, thankfully, Fon had stuck to normal food (as normal as it could get anyway) and had made beef stroganoff, accompanied with fine wine and the Arcobaleno allowed themselves to relax at the table (or as much as they could relax, anyway).
And even though all of them were highly accomplished individuals, the most skilled in their craft and line of work, not one of them predicted what Yuni was going to say next.
"So, everyone," the blue-haired daughter of Aria said brightly, breaking the silence for the first time in three weeks, "What do you think about starting a café?"
They'd all vehemently disagreed.
"No," Verde spat, wearing a rare expression of utmost horror on his face, "Definitely not."
Yuni just smiled.
There was a short pause, which Skull interrupted by stuttering, "Y-you're serious!" Yuni nodded as she took a gulp of her orange juice—none of the other Arcobaleno would allow their still young Sky to drink wine.
You could see Skull's eyebrows rise from underneath the green visor of his helmet. "B-but that'll never work out!"
"I think it'd be a good experience," Yuni said happily, unfolding a napkin, "Anyway, all of you need to fit back comfortably into your bodies and I think Namimori will be the best place!"
"Isn't Namimori where Iemitsu Sawada's home is?" Reborn asked suspiciously. "This isn't a trap of some sort, is it?"
After all, you could never really tell with Yuni. True, it was impossible for the girl to lie because her eyes were literally big pools of pure emotion, but she did like to give the Arcobaleno surprises. They were never nasty surprises, but they could be a bit… over the top.
"It's not a trap," Yuni looked hurt as she delicately wiped her mouth with the napkin and refolded it perfectly again, "But Namimori is the perfect town! Lots of Mafiosi go there for rests and post-mission relaxation, too."
"I've never heard of Namimori," Fon voiced his opinion, before pausing as something flashed across his eyes. "Actually, it does sound kind of familiar. I think one of my relatives live there," he said, looking across the room at Yuni.
"Yep! It's Hibari Kyouya," the bluenette as she refolded the paper napkin into a swan, and straightened it out again. "I think he's your nephew."
Fon didn't say anything after that.
"There has to be another reason why you chose Namimori," Lal picked up her napkin and folded it into a perfect flower in three seconds flat, "I know there is." Beside her, Skull attacked his beef stroganoff with a fork, which made clinking and dreadful screeching noises once in a while as it hit the plate.
"Well, I've checked the calendar of the Vongola," Yuni said perfectly innocently, "And there're a few events that will be happening in Namimori for the following months. We can open a café and offer it as a temporary refuge for tired Mafiosi!"
"And why are we doing this again?" Colonello demanded. He usually wouldn't be questioning their Sky—they all trusted Yuni to make the best decisions, after all. But Yuni did have a tendency to try and do what's best for everyone in general, and an Arcobaleno café would certainly be the safest place on the planet.
"Is there a reason for grouping and employing the seven strongest individuals in a mere café?" Viper, who was sitting normally in a chair (she used to float above the chair when they were in infant form, because cushions were unstable and one of those tall baby seats simply did not qualify), asked in that neutral tone of hers.
"Well," Yuni said mysteriously, "I think something's going to happen."
This made all of them sit up straighter and pay more attention. If Yuni felt that something was so important as to gather all the Arcobaleno in a café, it must be serious.
"Also," their little Sky added, jumping out of her chair and daintily brushing off her white cloak, "I think there're some very important people in that small town."
"Orange," Yuni declared, coloring a wall with an orange color pencil.
"Mirrors here," Lal insisted, taking a blue pen and marking out a series of rectangles along the wall.
"It would look better if there were some mirrors over there, too," Viper agreed, picking up another blue pen and drawing several perfect rectangles.
"Let's use lots of light colored wood!" Yuni suggested cheerily. "And little round tables, with vases of flowers in the middle! The chairs can have curly legs, too!"
"A back room, too," Lal said, adding another room on the gigantic blueprint they had spread out in front of them.
The male half of the Arcobaleno group stood at the back, leaning against the wall and glancing confusedly at each other.
All the females had thrown themselves into decoration and planning, which was slightly surprising (everyone expected Viper to want to look after financial business—she later assured them that yes, she was going to do so, but planning was currently more important), and all the men had to do was fetch a huge roll of paper and stationery.
Even so, being at the back of the room was a dangerous affair. Colonello ducked just in time for the end of a ruler to come whistling through the air and to the other side of the room.
"The line's crooked," Viper's calm voice floated through the room, "Adjust it a bit."
"The line's fine," Lal snapped, scribbling something on the paper. "There, that's the back room."
"I'm so glad everyone agreed to this," Yuni giggled in delight, "I've already rented out the store!"
There was a bout of silence where everyone realized what exactly this meant.
"You… already knew we were going to say yes?" Skull said slowly, earning himself a (admittedly unnecessary) thwack on the back of his helmeted head by Reborn for 'stating the obvious.'
"I didn't think you'd turn it down," Yuni said airily, "Working in a café sounds so fun, doesn't it?"
"I guess so," Skull said doubtfully, and Verde yelped as a ruler hit him on the head.
"Ooh, I like this!" Yuni danced around happily as Colonello fixed the boards on the floor.
"Why didn't we hire someone to do this, hey?" the blonde grumbled irritably as he crouched over a patch of concrete.
"Because you'd all do a better job than any other worker we could possibly find, of course!" Yuni praised, as she darted around rearranging flowers.
"That's true," Reborn agreed with a smirk as Leon painted the wall a cheery shade of orange. "There, it's done."
"Ooh, it's perfect!" Yuni exclaimed in delight, "At this rate we'll be done in a week!"
There was a muffled thump and the sound of multiple books and files sliding to the floor, and a pained yelp (which was also strangely muffled). "Oh, no," Yuni rushed to the back room's door, "I think that's Skull! Skull, are you okay?" And she disappeared into the back room.
Reborn and Colonello glanced at each other. "There's still half of the floor left to be done," Colonello nodded towards the direction of the planks.
"You do a quarter, I'll do a quarter," Reborn said, already staring towards the pile.
"You can't use Leon!" Colonello quickly said.
"I believe I'll do just fine without."
The two rolled up their sleeves (metaphorically, of course) and began laying out wooden planks at an inhumane speed, which was all very well and perfect until they nearly knocked Lal off her ladder trying to put the last plank in place before the other.
Lal hummed a tune inside her head as she fixed the hanging lamp. The floor gleamed and shone, though there was a patch with unfinished planks because of the unfortunate incident yesterday.
Colonello was talking to someone outside.
"…need a few extra hands anyway," he was saying, and Lal scoffed. Who was he talking to?
"Do I go inside?"
This new voice nearly made Lal topple off her ladder in shock.
It was undoubtedly the purest and most sincere voice she'd heard in ages, Yuni included (the young girl had seen a lot of the worse side of the world). She was almost tempted to make this new person turn around and go back somewhere else, because he sounded so innocent, so honest that she couldn't bear the thought of the poor boy entering the shop and having his life changed forever.
But it was too late, because the second the brunette entered the shop she couldn't say no.
And before she could object, she found herself saying, "…yes, you do."
The boy—Sawada Tsunayoshi, was it?—left to the back room and Lal realized with a feeling of dread that Reborn was in there.
Please don't creep the boy out too much, she thought, but it obviously hadn't worked as the boy crept out of the door, shoulders quivering slightly.
Ah, that she could understand. Reborn's gaze did tend to do that to people.