I might be showing my age here but - "I have asked Tom-san and Huck-san to guard the Belfast Mansion." Nice reference to Tom Sawyer and Huckleberry Finn.
@xllvr - Yup that pretty much sums it up. Although the second one wasn't a death per se but he was in a coma so his "spirit" (for lack of a better term) trained in the hall of heroes for 1k years.
I agree with others on this. The dragon was busy laughing as the MC was busy croaking, "god" revives him, and MC just shrugs it off like its nothing? idgi... Secondly does the baby dragon only "breathe clean air" and drink "dragon water" to live?