Skylark's Cousin (Katekyo Hitman Reborn)

Tsuna, Gokudera and Yamamoto were on their ways to their school. What happen when they ran into the shy boy who has eyepatch cover his left eye? What happen if they found out that the shy boy is the is The Skylark's Cousin? Warning: YAOI BXB, Various x Male!OC, Character will OOC!