That's right, Tsuna and Hibari are together.
Why, you ask? Does being hit by a death gas bomb count as the cause?
What is the opportunity, you ask? Is it an opportunity to confess my love in a super-dead state by only wearing a pair of fat pants, but was bitten to death because my clothes did not comply with school regulations?
I think Tsuna was also a pure straight man back then, until he encountered "a murder caused by a death gas bomb"
Tsuna said, Li Baoen, please don't be too harsh.