REBORN!
家庭教師ヒットマン REBORN! (original)
Tsuna, a timid junior high student, is a failure at school, sports, and social life. But everything around Tsuna has been completely changed when a baby called Reborn, who claims to be an Italian hit man from Vongola family shows up! Reborn was sent to groom Tsuna for his future life as a mafia boss of the family!
Starring Takashi Kondo, Toshinobu Iida, Kenjiro Tsuda, Yukari Kokubun, Yuka Terasaki, Junko Takeuchi, Satomi Akesaka, Suguru Inoue, Hidenobu Kiuchi, Daisuke Namikawa
It's a animation and action & adventure show, and has a rating of 7.6 out of 10 from Imdb which is usually fine for this kind of show.
Watch it here
Not found streaming from Finland.