them both are pretty similar.
the story told about old-vibes high school student with fluffy romance, strunggling for their youth age and someone they loved.
Both are presented in the form of a film
Hot Young Bloods probably will not make you think "ah, i miss my school days" like Yesterday Once More does, but it has the same idea exploring relationship between two young teens with different personalities.
the mi qiao and ben ben plotline has a very strong yesterday once more ring to it...both similar in showing the challenges of determining your path and accepting the future