
Honestly tho, what can u do in 5 mins to save the human race?
I'm having a hard time to comprehend even tho the solution is not here yet

Actually they went back to the past the second time, this time 4 years earlier than the present, and took the small Buddha corpse from wherever it was before Asuma could find it, therefore he wouldn't learn about the existence of Buddhas (remember he's a mad scientist), create the shackles, and invade their planet, which lead to all the events so far.
With all the these drama, can't help but say "spill the tea, bitches"