Summary: Join Nezu-sensei on how on earth that Lambo became the brother of the demon, prefect, the deliquent, the baseball jockey, the boxer and most of all his dame student 10 years ago. Let us see how these series of events drives him insane. TYL!

Chapter One: Lightning and the Cloud.

Everything seems normal to a certain lightning guardian. He woke up, at Maman's pancakes, bid goodbye to his siblings, walked with I-pin and headed to Namimori Middle School.

Everything goes down the hill when a certain old teacher came in. Lambo wanted to bang his head when the teacher announce that he will be thier homeroom teacher for the rest of the year. The worst teacher ever Nezu Dohachiro.

Nezu-sensei did the roll call. He never really like students who are stupid, idiot and dumb. So when the name Lambo Bovino rolled into his tongue, something clicked at the back of his mind.

"Lambo Bovino." he said.

"Present." he look at the boy. The boy had a bored look on his face, one eye closed and the other was looking at the window. He had a black curly hair and he can see the cow print right under hiss uniform. And suddenly, everything became crystal clear. He was the snotty little brat back then that always follows Dame-Tsuna.

"I remember you!" Nezu shouted and pointing at Lambo. Lambo open his eyes and look at him.

"You were the cow kid that always following Dame-Tsuna!" upon hearing the name Dame-Tsuna everyone gets excited.

"Dame-Tsuna? As in Tsunayoshi Sawada?"

"Yeah! The No-good kid 10 years ago?"

"He was my Onii-san's classmate."

"Onii-san said he was stupid."

"I bet he is on the streets right now!"

"Maybe he doesn't even have a nice job."

"SHUT UP!" Lambo shouted. They all look at him, electric green eyes filled with anger.

"My Tsuna-nii is great! You didn't know everything!" he don't like anyone who is insulting his Tsuna-nii or any of his siblings.

"No wonder you act like adame Bovino. Taking Dame-Tsuna as a role model." Nezu-sensei said. This make Lambo's blood to boil.

"Listen you old-fart Nezu! My Tsuna-nii is better than you!"

"Oh yeah? What's his job? Janitor? Begging on the streets?" Lambo wants to electrocute the old man but he know his Tsuna-nii will not be happy if he do that.

"Even if you work for your entire life, you will never reach how far my Tsuna-nii. Remember this old-fart, I will tell this to my brothers and sister about this!"

"Do it Dame-Lambo. Go to your mommy and tell everything about this. I'm not scared." Nezu-sensei said mockery evident in his voice. Suddenly the temperature drop and the students suddenly feel fear when they saw who is in the door.

Jet black hair, sharp eyes and his signature tonfa.

"For insulting the little animal and the omnivore, I will bite you to death." and everyone in the class faced the wrath of a certain skylark.