first, people started nitpicking whether tomato is a fruit or veggie... and now is about the tags...
shit like fact about tomato is a fruit or veggie doesn't have any significance to the plot, so just chill out, people...
when romance tag is added, it does NOT mean that the actual romantic-touchy-feely situations or events HAS to happen RIGHT NOW in the main story...
be it sooner or later, it doesn't really matter as long as there is a scene involving of romance, whether if it is in the main story or just treated as a background story...
the FACT that some romantic events are happened is a FACT indeed; no matter how trivial or significant, short or detailed, and thats why the romance tag is valid, its just that simple... people seemed to overlooked this matter and tried to justifying themselves into an arrogant all-knowing-and-demanding sob...
premature? if some romantic scenes were introduced right bat-off from the beginning of story, then this manga should have 'shoujo' tag added since its release on the first chapter...
there is some harem-inducing and makoto's romancing saga scene back at ch.29 in case you forgot, also you might re-read early ch.4 for early romance/romantic events references