I didnt even realize she was 17... by next yeat would it not be very odd for a 18 year old to be going out w someone that jst started high school(or however old tasuku is)
Their age gap is 3 years, according to the start of the story. He’s in second year of middle school, she’s in second year of high school. The implication has been that they still have a full year, from next spring, before she graduates. Before they both graduate. We’re still in fall, at the latest, of the same year as story start, far as I’m aware. This story seems to have a slow progression of time, while the relationship itself feels relatively quick (compared to other romcoms).
I will note that, depending on local laws, there might be allowances for around 3-year age gaps between minors or recently-minors in relationships (If only when it comes to certain activities, admittedly, which I don’t think either of these two are really worrying about right now). They’re usually referred to as ‘Romeo and Juliet’ laws. Ended up researching them thanks to stories like this one in the past. Arguably, this means they are potentially legally okay, not that they should have to worry about triggering such laws.