I can understand luffy running out of g4 (even though it is bullshit) due to him over using his haki even though no one else in the godamn series has ever ran out of haki, but what is the reason for fluffy running out of g5, when it is just his hybrid form and no haki related to it, every other zoan user in the series could technically use g5 for an unlimited duration.
I think it might genuinely be a mental block placed by himself, if my memory serves me correctly, I think fluffy ran out of g5 when fighting the gorosei once and he had the giants with him, and he miraculously regained his stamina once he ate. in the 2 cases when he lost g5 he was not in danger and the other time he ran out of g5 in wano he automatically restarted it because kaido was a genuine threat and he new it
I think it might genuinely be a mental block placed by himself, if my memory serves me correctly, I think fluffy ran out of g5 when fighting the gorosei once and he had the giants with him, and he miraculously regained his stamina once he ate. in the 2 cases when he lost g5 he was not in danger and the other time he ran out of g5 in wano he automatically restarted it because kaido was a genuine threat and he new it