The ending was happy but not satisfying for detective drama what happened to future criminal ?what happened to…
most have answer, except the car, maybe he turns it on and jump of it in the middle of the way, or two cars, ML survives in that time line and they said fated love is not affected by the time traveling actions, so they get together somehow and the son is born, and he saw the murder face so he is caught by the police, they disappear for awhile in 2021 so the son can guess the date as it, FL mom suspects that's why she writes letters to her daughter as if they are friends,the son creates the time machine cause the father obsess over it his whole life, he wants to give him a chance to caught the murder before the death's
While watching this I only had two suspects, and one of them was accurate enough xD(I told them one month ago in the comments), anyway, it was easy to guess but still funny to guess, I gonna miss the 80's friends ❤
2.Fast paced, slight comedy
3. Yes, but it's personal perception
4. Many