Hitman Renia!
Status
Summary
Verde invited the other six Arcobalenos and Lal to his lab, but all they could find was a coffin containing a girl clone and was made by all of their DNA and that her meaning was to kill Tsuna, So Reborn took her in and gave her the name 'Renia', so that Tsuna can use her as a training partner. Then Reborn finally knows why Verde abandoned her!