Reborn was to train the candidates for the throne of Vongola (again). Despite his bitter judgement about the idea (perfectly reasonble judgements if the last timeline was anything to go by), the hitman agrees. He prepares himself to face the 'dysfunctional' state the Sawadas were in. An absentee father, an oblivious mother, a suppressed older brother and a sociopathic younger brother. It really was a shame that the only thing dysfunctional about the twins was Ienari's habit to hide in an isolated area. Among other subjects. (Alternatively: In which Tsuna has a brother who is socially inept, awkward, and generally a handful. Also NOT an abusive!twin-fic. Just no.)