Tsuna blinked once or twice before gaping at the unexpected scene in front of him. He did not think they would actually enter his school, but then again, the pair was a part of the Mafia, so this should not have been a surprise to him. But still, this was surprising.

It had been a rather short yet long week since Ibara and Tsuru started staying the house as family. They insisted that they stayed in the attic since they did not want to impose on Nana by taking up two rooms when guests may come over at any time to stay over. Nana reluctantly agreed to let them stay in the same room as long as they let the door to the attic creak a bit so she could check up on them every once in awhile.

Ibara and Tsuru agreed to her conditions since they knew Nana would respect their privacy. There was one time when the door was closed that Nana had to tap on the door with a broom stick, since the door was on the ceiling. She was worried that something might be going up there.

Ibara told Nana that they were privately conversing which had something to do with that. Nana immediately understood and instructed them to hang up a sign whenever they had times like that so she would know and not bother them. It was not that she did not trust them, but she was starting to treat them like her own children. It would also help if she was notified of these things. In the end, it worked out.

Just before the week ended, Nana gathered Ibara, Tsuru, and Tsuna into the living room. It appeared to be serious when she was sitting down in the armchair while waiting them to sit down in the couch.

"Mama, what's wrong?" Ibara noticed that tension in the air and realized that this did not happen often. It became more plausible when she saw Tsuna's eyes glued to the coffee table in front of him, stiff as a stick as he sat down.

"Tsu-kun, don't be so stiff. It's not going to be like that one time when I gave the talk about the birds and the bees."

Tsun's face flushed crimson as he heard something his mother mentioned something other people did not need to hear. "Okaa-san! Not in front of Ibara-nee and Tsuru-nii!" He covered his face in his hands as he heard laughter beside him.

Ibara was facing the other way as hee hand covered her mouth, trying to hide her laugh. Tsuru did the same thing, but only an amused smile appeared on his face. They looked at the corner of their eyes and saw the boy pout, making it harder for Ibara to keep it in.

Nana smiled at their interactions with one another. It felt like they were truly siblings. It was a cute moment. She then cleared her throat, gaining the attention of the three. "Now, that we're all here, I am sure that Ibara-chan and Ru-chan wants to protect Tsu-kun. Yet, they cannot do so, since the only way to fulfill that ambition is to also be a part of the school he goes to. Am I right?"

Ibara and Tsuru's expressions became serious as they nodded. Tsuna stopped being embarrassed and attentively listened.

"But from what I recall, you are a couple years older than Tsu-kun, which makes you twenty at least. Do you have any ideas on how to infiltrate the school with that handicap?" Nana looked at the pain with a serious expression, realizing that this is something that might be difficult to do.

Ibara's lips curved into a devious smirk as Tsuru shrank into his seat on the couch. Tsuna had shivers down his spine.

Nana was amused by their reactions, while Tsuna had a bugging feeling that when they do get into his school, some things will be drastically changing.

"Just leave that to me, Mama. When you're a part of the Mafia, there is nothing you can't do. Infiltrating the school will just be the icing on the cake." That smile on her face just grew more devious as if she was a devil herself.

Tsuna could not help but gape at Ibara's reaction. What was she thinking? It was not as if they were actually infiltrating an enemy's base!

Yes, he really could not digest the scene in front of him. But now, he knew why Tsuru-nii was acting the way he did when Ibara-nee had that smile on her face.

"Hello, everyone. I will be the substitute teacher until a new one is found to replace Tachibana-sensei, who suddenly retired. My name is Sawada Yuki, but do call me Yuki-sensei since I know Sawada-san would not like it if he was confused with his cousin.

Yuki? Really, Tsuru-nii? Tsuna's expression was still plastered on his face.

Tsuru noticed this and slightly smirked at the young Decimo's shock. He slowly walked up the boy's desk; eyes gazed at him, and lightly wacked Tsuna on the head. "Is there something fascinating about me that you're staring at the front of the room for quite some time?"

"HIEEE!" Tsuna fell back on his chair as he suddenly noticed Tsuru was in front of him. "Itai… No, Tsu– Yuki-sensei." Tsuna looked up at Tsuru and gave him a small smile. Not a lot of people have seen Tsuna sincerely smile at school, so this was a new discovery to them, earning a few stares from his classmates.

Tsuru sighed to himself with a small smile on his lips as he turned toward the front of the classroom and started walking. "Well then, let's continue on with the class. Since this is only homeroom, I will be coming back later to teach math. I will also be back with a new transfer student. I hope you all welcome him." No one but two heard the cold tone in Tsuru's voice.

Yes, someone beside Tsuna heard his change in attitude and he was sitting right behind Tsuna.

Raven black hair decorated the top of his head. Dark brown eyes looked at the back of Tsuna's head, then to the teacher in the front of the classroom.

He had a tall athletic body equipped with quick and queen senses and reflexes. His eyes usually reflected cheeriness but held a deep hidden emotion of loneliness as no one he knew was really a friend.

However, the brunette in front of him was abnormally comfortable to be with even though he never really talked to the shorter person. Was it his nature that attracted him? Or was it something else that he saw in the boy that no one else saw? Yamamoto Takeshi let out a sigh and just remained focused on the lesson, though his mind drifted off to different matters.

Tsuna could not believe that Tsuru-nii was actually in front of him and came to his school. The older male was dressed in a simple white long sleeve shirt with simple black jeans. The shirt nicely defined his muscles without making him look as if he was trying to show off. His hair stayed aloof as his eyes were hidden by his glasses, so no one really got a good look of his eyes. If they did, then they would probably think he was a foreigner due to his eye color.

His personality was something Tsuna had not fully comprehended. It was like this man was created with three personalities. When they were at home, Tsuru would act indifferent but warm toward his family. When the fellow was serious, there was no emotion whatsoever on his face, as if it was a mask itself.

But here, he was acting warm, his expression was warm, but his eyes were cold as ice as his voice was barely coated with frost. From what Tsuna could tell, no one would want to rub Tsuru-nii the wrong way.

The bell finally rung, signaling homeroom was over, but Tsuna was not prepared for his next surprise. He was suddenly bombarded with questions before fully grasping what was happening to him. His fellow classmates suddenly started blasting questions at him.

"Is Yuki-sensei really related to you?"

"Do you know Yuki-sensei?"

"How come you never introduce him to us?"

The brunette shuffled uncomfortably in his seat, showing that he was nervous with the large crowd around him, which was enclosing on him.

"Maa. Maa. You guys have to calm down and let Tsuna have some air. How can he answer your questions if you don't give him some air?"

Tsuna turned around and saw Yamamoto Takeshi, grinning at him. Tsuna smiled a bit in return, but could not help but question how come this famous athlete was helping him.

Feet started shuffling back, but eyes were glued on Tsuna.

The scared male started fumbling with his fingers, deciding whether to tell his classmates or not. He looked up and whipped back to looking at his fingers when those eyes were still on him but with much anticipation. "Y-Yuki-sensei is my cousin on my father's side… H-He's staying in Namimori to earn his degree in teaching… And I just found out I had cousins…"

"Tsunayoshi!"

A woman's voice resonated in the room, annoying Tsuru very much. He did expect her change in personality to infiltrate the school, but to this degree…

Heads turned toward the source the sound, only to gawk at the woman, who was approaching Tsuru.

Soft blonde hair was curled in natural bangles opposed to their original straightness. Indigo violet eyes were hidden by glasses, hiding their exotic color from the students. She was wearing a simple black blouse with ruffles and a simple pale peach pencil skirt, combined with her doctor's coat. Her outfit defined her figure nicely without being too overexposed or over dressed.

"Yu-kun, do you know where Tsunayoshi is? Mama told me to bring his bento that he had forgotten."

Students were started to guess that theses two were a couple, due to their attitudes towards each other.

Tsuru just smiled at Ibara, his right eye twitching as he tried not to become more irritated. It went unnoticed by the students, except for the grinning Ibara. "Why, yes. I do. He's right over there in that center of students." His finger pointed to the crowd of teenagers.

Ibara just smiled, but a bit devious, as she turned around walking towards Tsuna. "Thank you." As she approached Tsuna, a path opened up to her as she walked up to Tsuna.

"Here you go, Tsunayoshi. Mama says that you shouldn't wake up late time so I don't have to bring it to you. But I don't mind if I get to see my cute cousin every day."

Tsuna blushed as he shrunk in his seat.

This time, the students looked at Tsuru, then Ibara, and finally Tsuna. "You're all related?..."

Ibara winked at them, giggling. "Of course. Don't we look alike?" She saw them shake their heads hesitantly. "Hahaha… Yeah, it's probably because me and Yu-kun, I mean Yuki-sensei's parents are foreigners. I have that European look while Yuki-kun just got the eyes."

Curious eyes were now looking at Tsuna.

Ibara noticed and decided to shift the attention onto her. "Hello, everyone. I am Enjou Tsukiko, but call me Enjou-sensei. I am the new school nurse. Yuki-sensei and I are both from Italy, so please take care of us. And if anyone hurts Tsunayoshi, he or she will feel a world of pain worse than death."

Her voice was a bit loud when she stated her last sentence. She noticed their widened eyes as Tsuru smacked his forehead. Some were shocked that she could say that with such a warm expression on her face.

Tsuna could not help but wanting to ditch school. It did appear to be a better idea this morning. But since Tsuru-nii and Ibara-nee were now a part of his school, they would be worried if he suddenly disappeared under their watch and he did not want that.

He banged his head against the desk as his classmates finally dispersed to get ready for the next period when the bell rang. He could not take any more surprises. But unfortunately, fate seemed to be messing with him now as there were several more along the way throughout the day.

Yamamoto looked at the Sawada cousins and quietly chuckled to himself. "Tsuna is quite interesting."

Notes:

Eh... This chapter was not that good at introducing Ibara and Tsuru... We're trying to weave in the other characters but it's a bit difficult since we got sick. Ugh... Well, review and tell us what you think. There are some grammar mistakes here and there... Gotta proofread these before putting them up...