Cale chavelizta's Manga

Honestly i was very invested to this manhwa especially im very captivated by their love in highschool, after what happen and the uke got transported to isekai novel, i thought the story will be much interesting but turns out so many uncomprehend plot and the story ability is so lacking, i've seen the raw and also bought a coin for this one but apparently the ending so rushed and didn't really happy even tho he back from coma and meet his real yujin