Damn no Diabolus Ex Machina, though I would say there was no 'proper' foreshadowing (I don't thing foreshadowing is necessary though, as... this is what real life relationships should look like, not beating around the bush (The mc though took 10 years...) I suppose I got customed to all millions of chapters like stories where it has negetive progress (Eg- Rent A Gf), thats why I left pure romance genre (Other fast romance will be Horimiya)).
Also, every romance (irl too) needs
wingman wing dragon like Dorami, (Or it will sink into the oblivion of a show like Miraculous (Seriously, how can that show thing romance, that too teenage, THAT TOO 13 YEARS OLD, is more important then saving Paris from actual terrorist level threats). I hate Mari's friends
)