show me the promise land

"Well," Arthur says, smiling through his furious heartbreak because otherwise he might do something...regrettable, "I do not agree." Under Tsuna's wide-eyed, disbelieving stare, Arthur continues, "In fact, I think you, Tsuna, are very, very good." [Arthur Pendragon mentors Tsuna fic. Crossover with Arthurian Mythology. Reincarnation.]