"Sawada Tsunayoshi."
Tsuna stopped correcting the student papers, glancing up at the baby before him.  The brunet raised an eyebrow.
"Reborn-kun?"
Click.
Tsuna idly wondered if he should've flinched at the gun that was currently being pointed at him.
"Who are you, Sawada Tsunayoshi?"
Tsuna blinked once before sighing, kneading his palm into his forehead--completely ignoring the gun pointed at him.
"...I don't think you'll believe me if I told you..."
Reborn stared unblinkingly at him.
"Try me."
Tsuna deadpanned the other before sighing through his nose, closing his eyes.
"I am from another world.  In that world, I am Vongola Decimo.  As Vongola Decimo, you, Renato Sinclair--or Reborn--trained me to become the don.  My Guardians are the same as this world--Gokudera Hayato, Yamamoto Takeshi, Sasagawa Ryohei, Hibari Kyoya, Bovino Lambo, Rokudo Mukuro, and Dokuro Chrome."
Tsuna opened his sunset eyes to see a surprised, yet amused, Reborn.
"Is that all?"
Tsuna chuckled.
'Typical Reborn.' "Yes."
Reborn slowly lowered his Leon-pistol; the baby hitman smirked.
"So...it's nice to meet you....Dame-Tsuna."
The said brunet sweat-dropped.
"Already calling me by my nickname...."
"Hoh~?  So you're dame in the other world and dame in this one?  Some things never seem to change I guess."
"Reborn!  So mean.  You're...."
Reborn smirked as Tsuna buried his face in his arms.
"...Sadistic and demonic in this world and same in the other one."
Tsuna had to shift to the right to avoid a Leon-hammer to the head; the brunet chuckled softly.
Reborn merely widened his smirk.
"I'm a sadist, yeah, but I'm proud of it."
Tsuna sweat-dropped once more.
'Of course...'
The ex-Decimo observed Reborn for a few more seconds.
"...That's not all you're here for, right?"
Reborn smirked.
"Hm~sharp.  And yes, I came here for something else--other than confirming your identity."
Tsuna lifted a curious eyebrow; his hyper intuition hadn't gone off yet.
"What might you need, Reborn?"
Reborn smirked once more.
"I want you to help me train Dame-Hito and his Guardians."
"Hah?"