Seems like the title is 梦中犹是少年游. I'm trying to find ML's name through FL's mdl actor page but there's none for now.
Btw, that vertical drama is pretty good.
Found a link to the novel too, if maybe you'd like to read the novel. (Just hit the translate button on chrome/use google translate)
https://m.wfxs.tw/booklist/6720455.html
