Kunugigaoka Middle School Class-3E meets the real 'World's Greatest Hitman'. Oh, and they just gained a substitute teacher from hell.

Tsuna va a la clase 3-E de la secundaria privada de Kunugigaoka para checar que sus alumnos estén bien física y mentalmente al enterarse de la naturaleza de la misión que se les ha encomendado a pesar de ser civiles adolescentes. Al irse, Tsuna deja buenos amigos y una promesa con Koro-sensei.

Birthday fic for SkyGem. Koro-sensei always planned for the worst case senario, so he called in a favour and ensured that Class E would always have a protector, even when he was gone. Enter Tsuna and the Decimo generation. A drabble series of all their adventures and how they came to meet. 1-5: From hurt to laughter.

When the peaceful Namimori Middle School were disrupt by the sound of the Mach-20 flying tentacle sensei, Hibari decided to give some extra lesson to the tentacle teacher. My oh my, he found his match, Karma when he follows the alien teacher to the other school, Kunugigaoka Middle School. When the two delinquent meet, what do you think would happen...? XD Title says it all

Koro-Sensei is dead, and the class is a little at a loss. There are tears and there are screams. Nagisa did the deed, but he knows without his class he wouldn't have succeeded. When they all arrive home they receive gifts from their Sensei. While his classmates receive textbooks of advice and a personal letter from their late Sensei, Nagisa's gift is but a single phone number.