1) So the Ten-Year Bazooka, when fired, switches your present self with your ten years later self. So present self goes to the future, and future self goes to the present. What if during those five minutes either present or future self was killed while switched? What would happen?
And is anybody wondering what 5 year old Lambo does in the future?
2) How did Irie Shoichi claim responsibility for bringing Reborn and Tsuna in the future? Didn't Lambo fire the Bazooka at Reborn for pissing him off? And then Tsuna was fired after he and Lambo got into a fight over the Bazooka. Irie had nothing to do with that at all...they were pretty much accidental.
3) How did Irie (the ten years younger Irie) get his hands on the Bazooka after Tsuna was sent to the Future?
4) How come Tsuna and the gang weren't sent back to their present time after five minutes? I think Irie explained it but I didn't understand.
And is anybody wondering what 5 year old Lambo does in the future?

2) How did Irie Shoichi claim responsibility for bringing Reborn and Tsuna in the future? Didn't Lambo fire the Bazooka at Reborn for pissing him off? And then Tsuna was fired after he and Lambo got into a fight over the Bazooka. Irie had nothing to do with that at all...they were pretty much accidental.
3) How did Irie (the ten years younger Irie) get his hands on the Bazooka after Tsuna was sent to the Future?
4) How come Tsuna and the gang weren't sent back to their present time after five minutes? I think Irie explained it but I didn't understand.