Long story short : Byun Baekhyun hated the park family for years 

now he and Jinsu are stuck on a time machine because of Byun Baekhyun’s family doing 

I WOULD LOVE TO BECSTUCK IN A TIME MACHINE WITH BYUN BAEKHYUN EVEN IF HE ACTS LIKE A JERK I WOULD STILL LOVE TO !!! Highly recommended!!!!!

link : https://www.asianfanfics.com/story/view/1057344/attayear-action-angst-fantasy-romance-schoollife-scifi-baekhyun