The Big Devil Jack Is Also Crazy

Brian, I'm back! Jack suddenly returned to when he was working as a handyman, and finally discovered that Brian might no longer be... Unexpectedly, he returned to the present from the future, and Jack also began his training journey... Will this change Han Shuo's fate? Will the two still be friends because of this? Will still become an enemy. Whose method is it to go back in time, and why do you want Jack to go back to the past? What is the purpose? Is this a chess game laid by the Mother Goddess before she died? Or is it the goddess of fate, the backhand behind the design?